Do not dive with a cylinder of enriched air if you have not personally veried its contents and entered the analyzed value into your dive computer. Failure to verify cylinder contents and enter the appropriate O2% into your dive computer will result in incorrect dive planning information.
The dive computer will not accept fractional percentage values of oxygen concentration. Do not round up fractional percentages. For example, 31.8% oxygen should be entered as 31%. Rounding up will cause nitrogen percentages to be understated and will affect decompression calculations. If there is a desire to adjust the computer to provide more conservative calculations, use the personal adjustment feature to affect decompression calculations or reduce the PO2 setting to affect oxygen exposure.
Set the correct Altitude Adjustment Mode when diving at altitudes greater than 300 m [1000 ft] the Altitude Adjustment feature must be correctly selected in order for the computer to calculate the decompression status. The dive computer is not intended for use at altitudes greater than 3000 m [10000 ft]. Failure to select the correct Altitude Adjustment setting or diving above the maximum altitude limit will result in erroneous dive and planning data.
Set the correct Personal Adjustment Mode. Whenever it is believed that factors that tend to increase the possibility of DCI exist, it is recommended that you use this option to make the calculations more conservative. Failure to select the correct Personal Adjustment Setting will result in erroneous dive and planning data.
Freediving after scuba diving is not recommended. It is recommended to avoid freediving for at least two hours and not to exceed ve meters [16 ft] after scuba diving depending on your diving activity. Suunto also recommends you to be trained in freediving technique and physiology before conducting breath holding dives. No dive computer can replace the need for proper dive training. Insufcient or improper training may cause diver to commit errors that may lead to serious injury or death. NOTE: Changing from AIR to EAN mode is possible at any time. Changing from EAN to AIR mode however requires you to wait until the no-ying time has counted down. FREE mode is accessible at any time. FREE mode is limited to 5 minutes, after which a warning is given. After 5+1 minutes the computer goes into error mode.

TABLE OF CONTENTS

1. INTRODUCTION... 12 1.1. SAFETY PRECAUTIONS... 13 1.1.1. Emergency Ascents... 14 1.1.2. Dive Computer Limitations.. 15 1.1.3. Nitrox... 15 1.1.4. Freediving... 15 2. GETTING ACQUAINTED... 17 2.1. FUNCTIONS.... 17 2.2. PUSH BUTTONS.... 17 2.3. WATER CONTACTS.... 19 2.4. TIME MODE [TIME]... 20 2.4.1. Timekeeping Display.. 20 2.4.2. Stopwatch [Timer]... 21 3. DIVING WITH THE MOSQUITO... 23 3.1 BEFORE DIVING.... 24 3.1.1. Activation and Pre-checks... 24 3.1.2. Battery Power Indicator and Low Battery Warning. 26 3.1.3. User Denable Functions and Alarms... 28 3.1.3.1. Presetting Time Alarm.. 29 3.1.3.2. Presetting Dive Alarms... 29 3.1.4. Bookmark Function... 29 3.2. SCUBA DIVING... 30

Fig. 3.4. Startup III. Surface mode (Air). Depth and dive time are zero. Pressing +/button activates alternative display of maximum depth and current time.
And if set to EAN mode, make sure that:
The Mosquito is now ready for diving. NOTE: The surface interval time does not run before the rst dive.
Fig. 3.5. Startup IV Free mode. Depth and dive time are zero. Pressing +/- button activates alternative display of maximum depth and current time or dive number.
After activation of the Dive Mode or after diving, the Mosquito will automatically switch to show the time keeping display within 5 minutes to conserve the battery power, if you do not press any buttons. However, the dive computer functions will remain active until it has calculated that all residual nitrogen has off-gassed. This may take up to 100 hours, as described in chapter 7.1. Operating Principles. However, SUUNTO recommends to turn on the Dive Mode before diving to check the settings, battery warning, etc. and for dive planning.
3.1.2. BATTERY POWER INDICATOR AND LOW BATTERY WARNING
This dive computer has a unique graphic Battery Power Indicator designed to give you an advance notice of impending need to change the battery. The Battery Power Indicator can always be seen as the Dive Mode is activated. The electroluminescent backlight will be on during the battery check. The following Table and Figure show the various warning levels.
TABLE 3.1. BATTERY POWER INDICATOR
Temperature or an internal oxidation of the battery affects the battery voltage. If the instrument is stored for a long period, the low battery warning may be displayed even though the battery has enough capacity. The low battery warning may also be displayed at low temperatures, even though the battery has enough capacity in warmer conditions. In these cases repeat the battery check procedure.
After the battery check the Low Battery Warning is indicated by the battery symbol (Fig. 3.6.). If the battery symbol is displayed in the Surface mode or if the display is faded or weak, the battery may be too low to operate the dive computer and battery replacement is recommended.
Fig. 3.6. Low Battery Warning. Battery symbol indicates that the battery is low and battery replacement is recommended.
NOTE: For safety reasons the backlight cannot be activated when the low battery warning is indicated by the battery symbol.

Fig. 3.23. Oxygen partial pressure and OLF displays. There is an audible alarm and the last segment of the bar graph starts to blink as oxygen partial pressure is greater than 1.4 bar or set value, and/or the OLF has reached 80% limit. When OLF has reached 100%, all segments starts to blink. If the OTU value is higher than the CNS value, the lowest segment blinks.
3.2.2.4. OXYGEN LIMIT FRACTION (OLF)
In addition to tracking the divers exposure to nitrogen, the instrument tracks the exposure to oxygen. These calculations are treated as entirely separate functions. The dive computer calculates separately for Central Nervous System oxygen toxicity (CNS) and Pulmonary Oxygen toxicity, the latter measured by the addition of Oxygen Toxicity Units (OTU). Both fractions are scaled so that the maximum tolerated exposure for each is expressed as 100%. The Oxygen Limit Fraction (OLF) bar graph has 7 segments, each representing 12,5% (from 1 to 50%) or 15% (from 50% to 80%). The OLF bar graph displays only the value of the higher of the two calculations. When the OTU value meets and exceeds the CNS value then in addition to displaying its percentage the lowest segment blinks to indicate that the value shown relates to OTU. The oxygen toxicity calculations are based on the factors listed in chapter 7.3. Oxygen Exposure.

3.2.3. AT THE SURFACE

3.2.3.1. SURFACE INTERVAL AFTER AN AIR/EAN DIVE
An ascent to any depth shallower than 1.2 m [4 ft] will cause the DIVING display to be replaced by the alternating SURFACE displays, giving the following information (Fig. 3.24. and 3.25.): maximum depth of most recent dive in meters [ft] present depth in meters [ft] the surface time in hours and minutes (separated by a colon), telling the duration of the present surface interval the desaturation/no-ying time in hours and minutes is shown next to the airplane in the center window of the display no-ying warning indicated by an airplane icon Altitude Adjustment setting Personal Adjustment setting Diver Attention symbol indicates if you should prolong your surface interval time STOP label for 5 min, if the Mandatory Safety Stop was violated ASC TIME, if the decompression ceiling was violated (= Error Mode) (Fig. 3.26.)

DIVE TIME

Fig. 3.32. Display after exceeding the 5min freediving time limit. Flashing Er and upward arrow.
3.3.6. SURFACE INTERVAL AFTER A FREEDIVE
An ascent to any depth shallower than 1.2 m [4 ft] will cause the DIVING display to be replaced by the SURFACE display, giving the following information (Fig. 3.33.): maximum depth of most recent dive in meters [ft] present depth in meters [ft] the surface time in minutes and seconds (separated by a colon), telling the duration of the present surface interval. After one hour the surface time is displayed in hours and minutes.
Fig. 3.33. Surface display after Freedive. Center window showing surface time.
NOTE: Dive numbering in the Free mode is different than in the Air/EAN mode. It is based on repetitive dives made during one day. The dive number is zeroed at midnight.
3.4. AUDIBLE AND VISUAL ALARMS
The dive computer features audible and visual alarms to advise when important limits are approached or to acknowledge preset alarms. A short single beep occurs when: the dive computer automatically returns to the Time mode. the no-decompression dive turns into a decompression stop dive. An arrow pointing upwards and the blinking ascent warning ASC TIME will appear (Fig. 3.17.). the maximum allowed ascent rate, 10 m/min [33 ft/min], is exceeded. SLOW and STOP warnings will appear (Fig. 3.15.). the Mandatory Safety Stop ceiling is exceeded. A downward pointing arrow will appear (Fig. 3.14.). the decompression ceiling depth is exceeded. An error warning Er and a downward pointing arrow appear. You should immediately descend to, or below, the ceiling. The instrument will otherwise enter a permanent Error Mode within three minutes, indicated by a permanent Er (Fig. 3.20.). the 5 minute time limit in Freediving mode is exceeded. An error warning Er and a upward pointing arrow will appear. After 5+1 minutes the Mosquito goes into Error mode (Fig. 3.32). Three single beeps with a two second interval and the backlight when:
Continuous beeps and the backlight activated when:
You are able to preset alarms before the actual dive. The user programmable alarms can be set for maximum depth, dive time and daily time. The alarms activate when: The preset maximum depth is reached continuous beep series for 24 seconds or until any button is pressed. the maximum depth blinks as long as the present depth value exceeds the adjusted value. The preset dive time is reached continuous beep series for 24 seconds or until any button is pressed. the dive time blinks for one minute, if no button is pressed. The preset alarm time is reached the current time is shown. continuous beep series for 24 seconds or until any button is pressed. the current time blinks for one minute, if no button is pressed.

Fig. 4.4. The year, month and day is selected. Page II. Dual time selected. Page III.
NOTE: While the selection is blinking and no button is operated within 10 minutes, the blinking stops and the Mosquito beeps and returns automatically to the timekeeping display. The display is illuminated by holding down the M button for more than two seconds.
Fig. 4.5. Daily alarm Setting Mode.
4.2. DAILY ALARM SETTING [ALM]
You can set one daily alarm in the Mosquito. When the daily alarm activates, the -symbol blinks for 1 minute and the alarm sounds for 24 seconds. The alarm is given at the preset time each day. Press any button to stop the audible alarm, after it has activated. To set the daily alarm: 1. In the Setting Mode, press S two (2) times to select the Daily alarm Setting Mode (Fig. 4.5.). 2. Wait two seconds until the Daily Alarm Setting Mode activates automatically. The time mode indicator appears and the alarm status [On/OFF] starts to blink on the display (Fig. 4.6.).
Fig. 4.6. Daily Alarm Setting Mode is activated.
3. Press S to change the selection in the following sequence: ->On/OFF status -> hours -> minutes 4. While the alarm status [On/OFF] is selected (blinking) press + or - to change the status. When the alarm status is On, the daily alarm indicator ( -symbol) in the bottom right corner of the display indicates that the alarm is on. 5. Set the other sections as follows: While any other digits (except alarm status) are selected (blinking), press + to increase the value or - to decrease it. Holding down either button starts the scrolling of the current selection. The 12-hour or 24-hour format of the alarm matches the format of the timekeeping display, which is selected in the Time Adjustment Mode (see chapter 4.1.). When using the 12-hour format of the alarm, take care to set the time correctly as morning (AM) or afternoon (PM). 6. After you have set the daily alarm, press the M button to save the settings and to return to the Setting Mode [SET].
4.3. DIVE MODE SETTINGS [DIVE]
In this mode you can select the type of dive mode to be used (Air, Nitrox or Free) or turn the dive modes OFF. If the dive modes are turned OFF, the dive computer functions are disabled, thus turning the Mosquito into a mere water resistant sportswatch. NOTE: If the DIVE mode is disabled (set to OFF), the instrument will not activate the selected diving mode (Air, EAN, Free) when submerged.
Fig. 4.7. Dive Setting Mode.

4.3.1. SET AIR MODE

To set the Air mode: 1. In the Setting Mode, press S three (3) times to select the Dive Setting Mode (Fig. 4.7.). 2. Wait two seconds until the Dive Setting Mode activates automatically. The enable/disable status [On/OFF] starts to blink on the display and the selected dive mode (AIR, EAN or FREE) is displayed (Fig. 4.8.) While the enable/disable status [On/OFF] is selected (blinking) press + or - to change the status.

Fig. 4.8. Set Air/EAN/Free Mode. Enable/disable status blinks.
3. Press S to change the selection in the following sequence: ->On/OFF status -> AIR/EAN/FREE mode When the AIR/EAN/FREE dive mode is selected (blinking) press + or - to change the mode to AIR.
Fig. 4.9. Setting Oxygen Percentage and Partial Pressure (EAN mode only).
4. After you have set the AIR mode, press the M button to save the settings and to return to the Setting Mode [SET].

4.3.2. SET EAN MODE

If set to the EAN (Nitrox) mode, the correct oxygen percentage of the gas in your cylinder must always be entered into the computer to ensure correct nitrogen and oxygen calculations. Also in EAN mode, the oxygen partial pressure limit must be set. When in the EAN Setting mode the equivalent allowed maximum depth based on the chosen setting will also be displayed. To set the EAN mode: 1. In the Setting Mode, press S three (3) times to select the Dive Setting Mode (Fig. 4.7.). 2. Wait two seconds until the Dive Setting Mode activates automatically. The enable/disable status [On/OFF] starts to blink on the display and the selected dive mode (AIR, EAN or FREE) is displayed (Fig. 4.8.) While the enable/disable status [On/OFF] is selected (blinking) press + or - to change the status. 3. Press S to change the selection in the following sequence: ->On/OFF status -> AIR/EAN/FREE mode-> if EAN selected: Oxygen percentage (O2%) -> Oxygen partial pressure (PO2) When the dive mode is selected (blinking) press + or - to change the mode to EAN. 4. Press S to access the Oxygen percentage (O2%) and Oxygen partial pressure (PO2) settings.
When Oxygen percentage (O2%) or Oxygen partial pressure (PO2) are selected (blinking) press + or - to change the setting (Fig. 4.9.). 5. After you have set the EAN settings, press the M button to save the settings and to return to the Setting Mode [SET]

4.3.3. SET FREE MODE

To set the FREE mode: 1. In the Setting Mode, press S three (3) times to select the Dive Setting Mode (Fig. 4.7.). 2. Wait two seconds until the Dive Setting Mode activates automatically. The enable/disable status [On/OFF] starts to blink on the display and the selected dive mode (AIR, EAN or FREE) is displayed (Fig. 4.8.) While the enable/disable status [On/OFF] is selected (blinking) press + or - to change the status. 3. Press S to change the selection in the following sequence: ->On/OFF status -> AIR/EAN/FREE mode When the dive mode is selected (blinking) press + or - to change the mode to FREE. 4. After you have set the FREE, press the M button to save the settings and to return to the Setting Mode [SET].

Fig. 4.14. Setting Altitude Adjustment.
Fig. 4.13. Adjustment Mode.
3. Press S to change the selection in the following sequence. ->altitude adjustment -> personal adjustment -> units 4. While the altitude digits are selected (blinking), press + or - to change the Altitude Mode (Fig. 4.16.).
Fig. 4.15. Setting Personal Adjustment.
5. While the personal adjustment digits are selected (blinking), press + or - to change the Personal Adjustment Mode (Fig. 4.15.). 6. While the units are blinking in the lower part of the display, press + or - to change units (Fig. 4.16.). 7. After you have set the desired adjustments, press the M button to save the settings and to return to the Setting Mode [SET] ).
Always recheck the personal and altitude adjustment to ensure that the altitude is not set for an altitude less than that of the dive site and that the personal mode corresponds to the desired conservatism. Failure to enter this information could result in dive planning errors and risk exposure to decompression sickness.
Fig. 4.16. Setting metric/ imperial units.
5. MEMORIES AND DATA TRANSFER [MEM]
The memory functions for the Mosquito include the combined Logbook and Dive Prole Memory, Dive History Memories for scuba and free dives and the Data Transfer and PC-Interface functions. NOTE: After scuba diving, the memory mode cannot be accessed until 5 minutes after the dive. Enter the Memory Mode [MEM] from other modes by pressing the M button. The text MEM at the bottom and the mode indicator on the left side of the display indicate the selected mode (Fig. 5.1.). If any button is not operated within 5 minutes after a function of the Memory Mode is selected, the Mosquito beeps and returns to the timekeeping display automatically.

Fig. 5.1. Memory Mode.

5.1. LOGBOOK AND DIVE PROFILE MEMORY [LOG]
This instrument has a sophisticated high capacity Logbook and Prole Memory. The data is recorded to the prole memory based on the sampling rate. The sampling rate in Air/EAN mode is 20 s, and in Free mode 2 s. Dives shorter than the recording interval are not registered. To enter the Logbook Memory Mode: 1. In the Memory Mode [MEM], press S to select the Logbook Memory Mode (Fig. 5.2.). The LOG text appears at the bottom of the display to indicate the selected mode. 2. Wait two seconds until the Logbook Memory Mode activates automatically. For each dive there are four pages of logbook dive information. 3. Press S to switch the display between Logbook display I, II, III and IV. The data of the most recent dive is shown rst. The END text is displayed after the oldest and most recent dive. (Fig. 5.7.) Note that chronological sequence in the logbook is determined by the date, not by the dive number.

Fig. 5.2. Logbook memory mode
The following information will be shown on four pages: Page I, main display (Fig. 5.3.) dive number in the dive series, Air/EAN dives are indicated by a D number and Freedives by a F number dive entry time and date.
Fig. 5.3. Logbook, page I.
Page II (Fig. 5.4.) maximum depth (NOTE: Due to lower resolution, the reading may differ from the maximum depth reading of the Dive History or surface display up to 0.3 m [1 ft].) total dive time Altitude Adjustment setting (not displayed in Free mode) Personal Adjustment setting (not displayed in Free mode) Blinking SLOW, if the diver has violated the maximum ascent rate STOP label, if the Mandatory Safety Stop was violated
Fig. 5.4. Logbook, page II. Main dive related data.
Fig. 5.5. Logbook, page III. Surface interval time, average depth.
ASC TIME label, if the dive was a decompression stop dive Diver attention symbol, if the dive was started while symbol was displayed downward pointing arrow, if the ceiling was violated oxygen percentage (only for nitrox dives) maximum OLF during the dive (only for nitrox dives). average depth surface interval time before the dive temperature at the maximum depth the prole of the dive, automatic scrolling during which: blinking diver attention symbol when the user has pressed the S button for Bookmark blinking SLOW and STOP label when registered blinking ASC TIME label when the dive became a decompression dive.

Page III (Fig. 5.5.)

Fig. 5.6. Logbook, page IV. Prole of specic dive.

Page IV (Fig. 5.6.)

The data of the most recent dive is shown rst. Press - to call the information from the previous dive. Press the - button consecutively to move backward through the dives. Press + to move forward through the dives. It is possible to scroll trough the dives on all four pages. The END text is displayed after the oldest and the most recent dive (Fig. 5.7.). The memory will always retain approximately the last 36 hours of dive time in Air/EAN mode and approximately 2 hours in freediving mode. After that, when new dives are added, the oldest dives are deleted. The contents of the memory will remain even when the battery is changed (assuming that the replacement has been done according to the instructions). DIVE PROFILE MEMORY [PRO] The scrolling of the prole will start automatically when the Prole/logbook page IV is entered (Fig. 5.6.). The dive time is displayed in sampling increments with each display being shown for about three seconds. The depths shown are the maximum values of each sampling interval.

Fig. 5.7. Logbook, end of the memory. END text is displayed between oldest and the most recent dive.
After the last depth gure of the selected prole, the Mosquito automatically returns to Display I of the same dive in the Logbook. If desired, the prole of the same dive can be recalled again following the above procedure. The scrolling of the prole can be stopped by pressing any button. Press S to stop the scrolling and to return to Display I of the same dive in the Logbook. Press + to stop the scrolling and to change to scrolling the next dive in the Logbook. Press - to stop the scrolling and to change to scrolling the previous dive in the Logbook. Press M to stop the scrolling and to return to the beginning of the Logbook. Press M two (2) times to exit the Logbook Memory [LOG] and enter the Memory Mode [MEM].
NOTE: Several repetitive dives are considered to belong to the same repetitive dive series if the no-ying time has not ended. See Dive Numbering in chapter 3.2.3.3. for further information.
5.2. DIVE HISTORY MEMORY [HIS]
The Dive History is a summary of all the scuba and free dives recorded by the Mosquito. Scuba and Freediving histories are kept separate. To enter the Dive History Memory Mode: 1. In the Memory Mode [MEM], press S two (2) times to select the Dive History Memory Mode (Fig. 5.8.). The HIS text appears at the bottom of the display to indicate the selected mode. 2. Wait two seconds until the Dive History Memory Mode activates automatically. The following scuba dive information will be shown on the display (Fig. 5.9.): the maximum depth ever reached the total accumulated dive time in hours the total number of dives.
Fig. 5.8. Dive History Memory.
The scuba dive history is indicated by a D on the lower left of the display. 999 dives and 999 hours of diving can be registered. When these maximum values are reached, the counters will start again from 0.
Fig. 5.9. Scuba Dive History Memory. Total number of dives, dive hours and maximum depth.
NOTE: The maximum depth can be reset to 0.0 m [0 ft] using the optional Suunto Dive Manager PCInterface. 3. To enter the Freedive History Memory Mode press the - or + buttons once when the History Memory is selected. The following Free dive information will be shown on the display (Fig. 5.10.): the maximum depth ever reached the longest free dive time ever reached The freedive history is indicated by a F on the lower left of the display.
Fig. 5.10. Free dive History Memory.
5.3. DATA TRANSFER AND PCINTERFACE [TR-PC]
The Mosquito can be connected to an IBM compatible personal computer (PC), using the optional SUUNTO PC-Interface and the SUUNTO DIVE MANAGER software. With the PC-Interface dive data from the Mosquito can be downloaded to a PC. Data can be added to complete the logbook and paper copies of your dive log and proles can easily be printed. The PC-Interface software can be used for educational and demonstration purposes, for planning dives, as well as for keeping complete record of your dive history with the Mosquito.

Protect the unit from shocks, extreme heat or direct sunlight and chemical attack. The Mosquito cannot withstand the impact of heavy objects like scuba cylinders, nor chemicals like gasoline, cleaning solvents, aerosol sprays, adhesive agents, paint, acetone, alcohol etc. Chemical reactions with such agents will damage seals, case and nish. Store your Mosquito in a dry place when you are not using it. The Mosquito will display a battery symbol as a warning when the power gets too low. When this happens, the Mosquito should not be used until the battery has been replaced (see chapter 3.1.2.). Do not fasten the strap of your Mosquito too tightly. You should be able to insert your nger between the strap and your wrist. Use the extension strap when fastening the Mosquito on your exposure suit.

6.2. MAINTENANCE

If left without care for an extended period, a thin lm (often invisible to the eye) will cover the unit. Much like the buildup on the glass of an aquarium, this lm is the result of organic contaminates found in both salt and fresh water. Suntan oil, silicone spray and grease will speed up this process. As a result of this buildup, moisture will be trapped next to the water contact and will not allow your Mosquito to operate properly. The water contact can be cleaned with a small brush (e.g. toothbrush). IMPORTANT: The Mosquito should be soaked, then thoroughly rinsed with fresh water and then dried with a soft towel after each dive. Make sure that all salt
crystals and sand particles have been ushed out. Check the display for possible moisture or water. DO NOT use the Mosquito if you detect any moisture or water inside. CAUTION! do not use compressed air to blow water off the unit do not use solvents or other cleaning uids that might cause damage do not test or use the Mosquito in pressurized air
6.3. WATER RESISTANCE INSPECTION
Water resistance of the unit must be checked after replacement of the battery, or after other service operations. The check requires special equipment and training. You must frequently check the display for any sign of leaks. If you nd moisture inside your advanced computer watch, there is a leak. A leak must be corrected without delay, as moisture will seriously damage the unit, even beyond repair. SUUNTO does not take any responsibility for damage caused by moisture in the Mosquito, if the instructions of this manual are not carefully followed. In case of a leak immediately bring the Mosquito to an authorized SUUNTO dealer or distributor.

SUUNTO RGBM ADAPTIVE DECOMPRESSION The SUUNTO RGBM algorithm adapts its predictions of both the effects of micro-bubble build-up and adverse dive proles in the current dive series. It will also change these calculations according to the personal adjustment you select. The pattern and speed of decompression at the surface is adjusted according to micro-bubble inuence. Also on repetitive dives adjustment may be applied to the maximum allowable nitrogen overpressure in each theoretical tissue group. Depending on circumstances Suunto RGBM will adapt the decompression obligations by doing any or all of the following: Reducing no-decompression stop dive times Adding Mandatory Safety Stops Increasing decompression stop times Advising an extended surface interval (Diver Attention symbol).
DIVER ATTENTION SYMBOL ADVICE TO EXTEND SURFACE INTERVAL Some patterns of diving cumulatively add a higher risk of DCI, e.g. dives with short surface intervals, repetitive dives deeper than earlier ones, multiple ascents, substantial multiday diving. When this is detected in addition to adapting the decompression algorithm Suunto RGBM will in some circumstances also advise, with the Diver Attention Symbol (review chapter 3.2.3.2.) that the diver extend the surface interval

7.3. OXYGEN EXPOSURE

The oxygen exposure calculations are based on currently accepted exposure time limit tables and principles. In addition to this the dive computer uses several methods to conservatively estimate the oxygen exposure. These include for example: the displayed oxygen exposure calculations are rounded to the next higher whole percentage value for recreational scuba diving, the recommended upper limit of 1.4 bar PO2 is used as a default the CNS% limits up to 1.4 bar are based on 1991 NOAA Diving Manual limits, but the limits higher than 1.4 bar are signicantly shortened the OTU monitoring is based on the long-term daily tolerance level and the recovery rate is reduced.
The oxygen related data and warnings are provided at all appropriate phases of a dive. The following information will be shown before and during a dive, when the computer is set in EAN mode: the selected O2% the color-coded OLF% bar graph for either CNS% or OTU% audible alarms are given and the OLF bar graph starts to blink when the 80% and 100% limits are exceeded the blinking of the bar graph stops, when the PO2 is below 0.5 bar audible alarms are given and the actual PO2 value blinks when it exceeds the preset limit in dive planning the maximum depth limit according to the O2% and maximum PO2 selected.

7.4. TECHNICAL SPECIFICATION
Dimensions and weight: Width: 48.9 mm [1.92 in] Height: 54.8 mm [2.16 in] Thickness: 15.8 mm [0.62 in] Weight: 50.3 g [1.78 oz] Temperature compensated pressure sensor. Salt water calibrated, in fresh water the readings are about 3% smaller (calibrated complying with prEN 13319). Maximum depth of operation: 80 m [262 ft] (complying with prEN 13319). Accuracy: 1% of full scale or better from 0 to 80 m [262 ft] at 20C [68F] (complying with prEN 13319). Depth display range: 0 99.9 m [300 ft]. Resolution: 0.1 m [1 ft]

Depth Gauge:

Temperature display: Resolution: 1C [1.5F] Display range: - 20. +50C [- 4. +122F] Accuracy: 2C [ 3.6F] within 20 minutes of temperature change Accuracy: 15 s /month (at 20C [68F]) 12/24 h display Dive time: 0 to 999 min (SCUBA), 0 to 5 min (Free mode) Surface time: 0 to 99 h 59 min. Dive counter: 0 to 99 for repetitive dives. No-decompression time: 0 to 199 min (- - - after 199). Ascent time: 0 to 99 min (- - after 99). Ceiling depths: 3 to 99 m or 10 to 99 ft (- - after 99 m/ft). Oxygen%: 21 - 50. Oxygen partial pressure Oxygen Limit Fraction: 1 - 100% (bar graph).

Calendar Clock:

Other displays:
Displays only in EAN mode:
Logbook/Dive Prole Memory: Recording interval in Air/EAN modes: 20 seconds, records the maximum depth of each interval. Recording interval in Free mode: 2 seconds Memory capacity: FREE MODE Recording interval Approx. 45 min. dive Approx. 1 min. freediving 2s 4h 2h AIR/EAN MODE 20s 36h
Depth accuracy: 0.3 m [1 ft]. Dive time accuracy: recording interval Normal altitude range: 0 to 3000 m [10000 ft] above sea level. Operating temperature: 0C to 40C [32F to 104F]. Storage temperature: -20C to +50C [-4F to +122F].

Operating Conditions

It is recommended that the Mosquito be stored in a dry place at room temperature.
Tissue Calculation Model Suunto RGBM algorithm (developed by SUUNTO and Bruce R. Wienke, BS, MS and PhD). 9 tissue compartments. Tissue compartment halftimes: 2.5, 5, 10, 20, 40, 80, 120, 240 and 480 minutes (on gassing). The off gassing halftimes are slowed down. Reduced gradient (variable) M values based on diving habit and dive violations. The M values are tracked up to 100 hours after a dive. The EAN and oxygen exposure calculations are based on recommendations by R.W. Hamilton, PhD and currently accepted exposure time limit tables and principles. One 3 V lithium battery; CR 2032 Battery storage time (shelf life): Up to 18 months. Replacement: Every 18 months or more often depending on dive activity. Life expectancy at 20C [68F]: -> 16 months 0 dives/y -> 11 months 50 dives/y -> 9 months 100 dives/y -> 6 months 200 dives/y

Battery

The following conditions have an affect on the expected battery lifetime: The length and type of the dives. The condition in which the unit is operated and stored (e.g. temperature/ cold conditions). Below 10C [50F] the expected battery lifetime may be 50-75% of that at 20C [68F]. The use of the backlight and audible alarms. The quality of the battery (some lithium batteries may exhaust unexpectedly, which cannot be tested in advance). The time the dive computer has been stored until it gets to the customer. The battery is installed into the unit at the factory.
NOTE: Low temperature or an internal oxidation of the battery may cause the battery warning to operate even though the battery has enough capacity. In this case, the warning usually disappears when the Dive Mode is activated again.

8. WARRANTY

NOTE: The warranty arrangements vary in different countries. The dive computer packaging contains information regarding the warranty benets and requirements applicable to your purchase. This Suunto dive computer is warranted against defects in workmanship and materials for a period of two years after purchase to the original owner subject to and in accordance with the terms and conditions set forth below: The dive computer should be serviced or repaired only by an authorized Suunto dealer or distributor. This warranty does not cover damage to the product resulting from improper usage, improper maintenance, neglect of care, alteration or unauthorized repair. This warranty will automatically become void if proper preventive maintenance procedures have not been followed as outlined in the use and care instructions for this product. If a claim under this or any other warranty appears to be necessary, return the product, freight prepaid, to your Suunto dealer or distributor or qualied repair facility. Include your name and address, proof of purchase and/or service registration card, as required in your country. The claim will be honored and the product repaired or replaced at no charge and returned in what your Suunto dealer or distributor determines a reasonable amount of time, provided all necessary parts are in stock. All repairs made, not covered under the terms of this warranty, will be made at the owners expense. This warranty is non-transferable from the original owner.
All implied warranties, including but not limited to the implied warranties of merchantability and tness for a particular purpose, are limited from date of purchase and in scope to the warranties expressed herein. Suunto shall not be liable for loss of use of the product or other incidental or consequential costs, expenses or damage incurred by the purchase. All warranties not stated herein are expressly disclaimed. Some states do not allow the exclusion or limitation of implied warranties of consequential damages, so the above exclusions or limitations may not apply to you. This warranty gives you specic legal rights, and you may also have other rights that vary from state to state. This warranty does not cover any representation or warranty made by dealers or representatives beyond the provisions of this warranty. No dealer or representation is authorized to make any modications to this warranty or to make any additional warranty. Battery replacement is not covered by this warranty. This Instruction Manual should be kept with your dive computer.