MO0407-EB

Operation Guide 2782

Getting Acquainted

Congratulations upon your selection of this CASIO watch. To get the most out of your purchase, be sure to carefully read this manual and keep it on hand for later reference when necessary.
Warning! The measurement functions built into this watch are not intended for taking measurements that require professional or industrial precision. Values produced by this watch should be considered as reasonable representations only. This watch is intended for use up to skin diving and snorkeling. Never use this watch while scuba diving. Never operate the buttons of the watch while underwater. CASIO COMPUTER CO., LTD. assumes no responsibility for any loss, or any claims by third parties that may arise through the use of this watch.

Applications

The built-in sensors of this watch measure altitude, barometric pressure, temperature and underwater depth. Measured values are then shown on the display. Such features make this watch useful when hiking, mountain climbing, skin diving, or snorkeling, or when engaging in other such outdoor activities.
For a watch with the elapsed time bezel
Rotate the elapsed time bezel to align the mark with the minute hand. After that, the number of minutes that elapse is indicated by how far the minute hand has moved from.

About This Manual

Button operations are indicated using the letters shown in the illustration. Each section of this manual provides you with the information you need to perform operations in each mode. Further details and technical information can be found in the Reference section. Most of the display examples in this manual show only the digital display, without the analog hands, as shown in the lower illustration.

Elapsed time bezel

(Light)

General Guide

The illustration below shows which buttons you need to press to navigate between modes. In any mode, press L to illuminate the display.

Stopwatch Mode

From the Timekeeping Mode, you can press B to directly enter the Barometer/Thermometer Mode or D to enter the Altimeter Mode. You can also use B and D to switch between the Barometer/Thermometer Mode and the Altimeter Mode.

Press C.

Barometer/ Thermometer Mode

Alarm Mode

Hand Setting Mode

Timekeeping

Month Day Day of week
This watch features separate digital and analog timekeeping. The procedures for setting the digital time and analog time are different. Whenever you need to adjust both the digital and the analog time settings, make sure you adjust the digital setting first.
3. When the setting you want to change is flashing, use D and/or B to change it as described below. Setting Button Operations Screen Seconds Press D to reset the seconds to 00. Hour, Minutes Use D (+) and B () to change the setting.

Digital Time and Date

Seconds Hour : Minutes PM indicator
Use the Timekeeping Mode to set and view a digital display of the current time and date. When setting the digital time, you can also configure settings for the 12/24-hour format.
12/24-Hour format Year, Month, Day
Use D to toggle between 12-hour (12H) and 24-hour (24H) timekeeping. Use D (+) and B () to change the setting.
4. Press A to exit the setting screen. Note Resetting the seconds to 00 while the current count is in the range of 30 to 59 causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are reset to 00 without changing the minutes. With the 12-hour format, the P (PM) indicator appears on the display for times in the range of noon to 11:59 p.m. and no indicator appears for times in the range of midnight to 11:59 a.m. With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without any indicator. The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is applied in all modes. The year can be set in the range of 2000 to 2039. The day of the week is calculated automatically in accordance with the date you set. The watchs built-in full automatic calendar automatically makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except after you have the watchs battery replaced.

To set the digital time and date
1. In the Timekeeping Mode, hold down A until the seconds start to flash, which indicates the setting screen. 2. Press C to move the flashing in the sequence shown below to select other settings.
Seconds Hour Minutes 12/24-Hour Format Day Month

Timekeeping Mode

Altimeter Mode

Countdown Timer Mode

Depth Gauge Mode

Press B.

Press D.

Setting the Analog Time

Perform the procedure below when the time indicated by the analog hands does not match the time of the digital display.
About Barometric and Temperature Measurements
Barometric pressure and temperature measurement operations are performed as soon as you enter the Barometer/Thermometer Mode. After that, barometric pressure and temperature measurements are taken every five seconds for the first two or three minutes. indicator above BARO flashes while the watch is taking a The barometric pressure reading. The barometer automatically takes measurements every three hours (starting from midnight), regardless of what mode you are in. The results of these measurements are used for plotting points on the barometric pressure history graph. You can also perform a barometric pressure and temperature measurement at any time by pressing B in the Barometer/Thermometer Mode.
To adjust the analog time
1. In the Timekeeping Mode, press C five times to enter the Hand Setting Mode. 2. Hold down A until the current digital time starts to flash, which indicates the analog time setting screen. 3. Press D to advance the analog time setting by 20 seconds.

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Holding down D advances the analog time setting at high speed. If you need to advance the analog time setting a long way, hold down D until the time starts advancing at high speed, and then press B. This locks the high-speed hand movement, so you can release the two buttons. High-speed hand movement continues until you press any button. It will also stop automatically after the time advances 12 hours or if an alarm starts to sound. 4. Press A to exit the setting screen. To return to the Timekeeping Mode, press C.

Barometer/Thermometer

This watch uses a pressure sensor to measure air pressure (barometric pressure) and a temperature sensor to measure temperature. You can calibrate the temperature sensor and the pressure sensor if you suspect that readings are incorrect.
To take barometric pressure and temperature readings
Pressing B in the the Timekeeping Mode or in the Altimeter Mode enters the Barometer/Thermometer Mode and automatically starts taking barometric pressure and temperature measurements.
History graph History Graph and Barometric Pressure

Barometric pressure

It can take up to four or five seconds for the barometric pressure reading to appear after you enter the Barometer/Thermometer Mode. Barometric pressure is displayed in units of 1hPa (or 0.05 inHg). The displayed barometric pressure value changes toxxxx hPa (or inHg) if a measured barometric pressure falls outside the range of 600 hPa to 1100 hPa (17.70 inHg to 32.45 inHg). The barometric pressure value will be displayed again as soon as the measured barometric pressure is within the allowable range. Temperature is displayed in units of 0.1C (or 0.2F). The displayed temperature value changes to xx. x C (or F) if a measured temperature falls outside the range of 10.0C to 60.0C (14.0F to 140.0F). The temperature value will be displayed again as soon as the measured temperature is within the allowable range. Some countries refer to the barometric pressure unit hecto-pascal (hPa) as millibars (mb). It really makes no difference, because 1hPa = 1mb. See Barometer and Thermometer Precautions for important precautions.
Barometric Pressure History Graph
Barometric pressure indicates changes in the atmosphere. By monitoring these changes you can predict the weather with reasonable accuracy. The barometric pressure history graph contains points that show you the changes in barometric pressure readings taken by the watch for up to the last 18 hours. The rightmost point on the graph is the latest reading. The relative positions of the points on the graph indicate whether barometric pressure is rising, falling, or holding relatively steady.

To set a reference altitude
1. In the Altimeter Mode, hold down A until OFF appears (flashing) or until the display goes blank. This is the setting screen. Wait for four or five seconds before performing step 2, below. If you dont wait, there is the chance of setting value error. If the display went blank in step 1, the current reference value will appear (flashing) on the display after the four or five seconds pass.

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Depth Gauge
The pressure sensor of the watch can also be used to perform underwater depth measurement while skin diving or snorkeling. Depth readings are taken every three seconds, and displayed as a value up to 30 meters (98 feet). You can store the data of your last dive in log memory, including total time submerged, maximum depth, and water temperature at the maximum depth attained during your dive. You can view the log data of your last dive before beginning a new dive. Important! Never use this watch to measure depth while scuba diving. This watch is designed to start depth measurement and record data in memory after a depth of 1 meter (4 feet) is reached. Because of this, the explanations in this Users Guide uses the term submerged to refer to any depth deeper than 1 meter, and the on the surface to refer to any depth shallower than 1 meter. Leaving the watch in the Depth Gauge Mode while not in the water consumes battery power. Exit the Depth Gauge Mode whenever you are not using it. The measurement unit selected in the Altimeter Mode is also used in the Depth Gauge Mode.
Important! Note the following important precautions whenever using the Depth Gauge Mode. Before Skin Diving/Snorkeling Before beginning a dive, check to make sure that none of the following marks are shown on the display. BATTERY (indicating a weak battery) RECOVER (indicating a weak battery) Err (indicating sensor malfunction) Make sure that (or 0) is displayed at your current depth. Make sure that the watch is set to the correct time of day. Check the glass, case and band for cracks or chips. Make sure that the band is fastened securely around your wrist.
If OFF or the current reference altitude value does not appear at this time, press A to return to the Altimeter Mode screen, and perform step 1 again. 2. Press D (+) or B () to change the current reference altitude value by 5 meters (or 20 feet). You can set the reference altitude within the range of 4,000 to 4,000 meters (13,120 to 13,120 feet). Pressing D and B at the same time returns to OFF(no reference altitude), so the watch performs air pressure to altitude conversions based on preset data only. 3. Press A to exit the setting screen.

Pressing D in the Timekeeping Mode or in the Barometer/Thermometer Mode enters the Altimeter Mode and automatically starts altitude measurement. It can take up to four or five seconds for the altitude reading to appear after you enter the Altimeter Mode. The Altimeter Mode screen also displays the current temperature. See Barometer/ Thermometer for more information. During the first two or three minutes after entering the Altimeter Mode, the indicator flashes on the display and measurements are taken every five seconds. After that, the indicator stops flashing and remains on the display as measurements are taken every two minutes.

Depth = 1.0 m (4 ft.)

Start of dive Maximum depth

20 sec. 30 sec. 1 min.

End of dive
Total time submerged: 1 minute 50 seconds
Remember that the term dive as used in this manual refers to skin diving or snorkeling only. The watch will start depth measurement automatically when the sensor detects that your depth exceeds one meter (about four feet). Depth measurement stops automatically whenever your depth becomes less than one meter (four feet). Depth measurement restarts whenever you re-submerge past one meter (four feet). All data that is measured between the start of the dive and the end of the dive is treated as part of the same dive, no matter how many times you surface during the dive.
To perform depth measurement
1. Before beginning a dive, enter the Timekeeping Mode and then press C to enter the Depth Gauge Mode. It can take up to four or five seconds until (or 0) appears on the display. 2. Enter the water and submerge past one meter (four feet) to start the dive. 3. When you want to end the dive, return to the surface and then press C to exit the Depth Gauge Mode. Exiting the Depth Gauge Mode causes the data accumulated during the dive (time submerged, maximum depth attained, water temperature at maximum depth) to be stored in log memory. The watch will not exit the Depth Gauge Mode if any value other than (or 0) is displayed for the depth when you press C. If (or 0) does not appear on the display even though you are on the surface (depth of less than 1 meter/4 feet), perform the procedure under To manually reset the reference depth to 0 meters (feet). See Log Data for information about viewing dive data.

To view water temperature and maximum depth
In the Depth Gauge Mode, you can press D toggles the display between the Elapsed Measurement Time/Current Depth and the Water Temperature/ Maximum Depth screens.
Water Temperature/ Elapsed Measurement Time/ Maximum Depth Screen Current Depth Screen Elapsed Water measurement time temperature (hours, minutes, seconds) Press D to toggle between screens. Current depth Maximum depth If you do not perform any button operation for about five or six seconds while the Water Temperature/Maximum Depth screen is on the display, the watch will automatically return to the Elapsed Measurement Time/Current Depth screen. Never operate the buttons of the watch while underwater.
While Skin Diving/Snorkeling Check to make sure that timer operation and depth measurement are being properly. Take care when skin diving/snorkeling near rocks or coral to avoid scratching the watch. After Skin Diving/Snorkeling To avoid corrosion, rinse your watch thoroughly with fresh water to remove salt water, dirt, etc. (When possible, soak the watch in fresh water overnight to make sure that all salt is removed.) When using a metal band, occasionally clean inside the gaps in the band using a soft toothbrush and soapy water. Failure to do so can result in corrosion of the timepiece, soiling of clothing or irritation to sensitive skin.
To delete log memory data
1. While in the Timekeeping Mode, press C to enter the Depth Gauge Mode. 2. Press B to display the log memory data. 3. Hold down A for about two seconds until the log data is deleted and the watch returns to the Depth Gauge Mode screen. 4. To exit the Depth Gauge Mode, press C.

Countdown Timer

1/10 second
Depth Gauge Mode Precautions
After you enter the Depth Gauge Mode, the watch automatically takes a reference pressure reading and sets the result a 0 meters (feet). This means that before starting a dive, you should enter the Depth Gauge Mode while at the waters surface, never while the watch is submerged. A major change in air temperature or other phenomena while you are using the Depth Gauge Mode can cause the display to show a value other than 0 meters (feet) when you are at the surface of the water. If this happens, reset the reference depth to 0 meters (feet). See To manually reset the reference depth to 0 meters (feet) for more information. Depth values are displayed in units of 0.1 meter (or 1 foot). (or 0)is displayed whenever your depth is less than one meter (four feet). dEEP is displayed in place of the depth value whenever your depth is greater than 30 meters (98 feet). If you continue to dive deeper after dEEP appears, xxxx will appear in place of the depth value. If xxxx remains on the display after you surface, hold down C for three seconds to exit the Depth Gauge Mode. If xxxx keeps appearing in place of the depth value, it could mean that the sensor is malfunctioning. Take the watch to the place where you purchased it or to some other CASIO retailer to have it checked. If the elapsed measurement time exceeds three hours, the watch will automatically switch to the Timekeeping Mode and store the data for the current dive into log memory. The progress beeper and auto-repeat timer alarm do not sound while the watch is in the Depth Gauge Mode. The watch can take about five minutes to display the correct water temperature when there is a great difference between air temperature and water temperature, when there is a sudden change in water temperature, etc.

Minutes Seconds

You can set a countdown timer start time in the range of 1 minute to 24 hours. An alarm sounds when the countdown reaches zero. An autorepeat feature causes the countdown to restart automatically when the end of a countdown is reached, and a progress beeper signals the progress of the countdown. All of this makes the countdown timer a valuable tool for timing the start of a yacht race. All of the operations in this section are performed in the Countdown Timer Mode, which you enter by pressing C.
Configuring the Countdown Timer
The following are the settings you should configure before actually using the countdown timer. Countdown start time Auto-repeat on/off Progress beeper on/off

Countdown start time

You can set a countdown start time from 1 minute to 24 hours.

Auto-repeat

Whenever zero is reached, the watch beeps (Auto-repeat timer alarm) and auto-repeat automatically restarts the countdown from the countdown start time you set. Turning off auto-repeat causes the countdown to stop and the countdown start time to appear on the display when the end of the countdown is reached.

Progress Beeper

When the progress beeper is turned on, the watch beeps at minute 10, 5, 4, 3, 2, and 1, of the countdown, and at the second 50, 40, 30, 20, 10, 5, 4, 3, 2, and 1 of the final minute of the countdown.
To set the countdown start time and auto-repeat on/off
1. In the Countdown Timer Mode, hold down A until the hour setting of the countdown start time starts to flash, which indicates the setting screen. 2. Press C to move the flashing in the sequence shown below to select other settings.
Hours Minutes Auto-repeat on/off

Log Data

Exiting the Depth Gauge Mode after a dive causes the measured data to be stored automatically into log memory. Stored data remains in log memory until you start a new dive, which causes the existing data to be replaced with the data of the new dive. There is memory for a single log memory record, which includes the following data. Total Time Submerged: This value shows the cumulative amount of time (hours, minutes, seconds) that you spend submerged at a depth of one meter (four feet) or greater. Maximum depth: This value shows the maximum depth you attained during the dive. Water temperature at maximum depth: This value shows the water temperature at the maximum depth attained during the dive. Perform the following steps to view the log data that is currently stored in memory.

Auto-repeat indicator

To view log data
1. While in the Timekeeping Mode, press C to enter the Depth Gauge Mode. 2. Press B to cycle through the data screens in the sequence shown below.
Log data screen indicator Total time submerged Water temperature at maximum depth
While the auto-repeat setting (ON or OFF) is flashing on the display, press D to toggle auto-repeat on (ON) and off (OFF). 4. Press A to exit the setting screen. The auto-repeat indicator ( ) appears on the display while auto-repeat is turned on.

Maximum depth

Press B. B
To turn the progress beeper on and off
Pressing B while the countdown start time is on the display or while a countdown timer operation is in progress in the Countdown Timer Mode toggles progress beeper operation on ( displayed) and off ( not displayed).

Depth Gauge Mode Screen

B Log Data Screens
If you do not perform any button operation for about five or six seconds while a Log Data screen is on the display, the watch will automatically return to the Depth Gauge Mode screen. You cannot view log memory data while a depth measurement operation is in progress. 3. To exit the Depth Gauge Mode, press C.
Progress beeper on indicator

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3. Perform the following operations, depending on which setting is currently selected on the display. While the hour or minute setting is flashing, use D (+) or B () to change it. For a 24-hour countdown, set a start time of 0:00.
To use the countdown timer
Press D while in the Countdown Timer Mode to start the countdown timer. When the countdown reaches zero, the alarm sounds for 10 seconds or until you stop it by pressing any button. Press D while a countdown operation is in progress to pause it. Press D again to resume the countdown. The countdown timer operation continues even if you exit the Countdown Timer Mode. To completely stop a countdown operation, first pause it (by pressing D), and then press B. This returns the countdown time to its starting value. If the countdown timer is running while you are using the Depth Gauge Mode while diving, the alarm will sound when the end of the countdown is reached. However, the following countdown timer beeper operations are disabled during a Depth Gauge Mode dive. Auto-repeat timer alarm Progress beeper Frequent use of auto-repeat and the alarm can run down battery power. 3. Press C to move the flashing between the hour and minute settings. 4. While a setting is flashing, use D (+) and B () to change it. When setting the alarm time using the 12-hour format, take care to set the time correctly as a.m. (no indicator) or p.m. (P indicator). 5. Press A to exit the setting screen.

Parallel to ground More than 40
B Split release Display time of second runner.

Alarms

Hourly time signal on indicator Alarm on indicator
Alarm Time (Hour : Minutes) Alarm number
You can set five independent daily alarms. When an alarm is turned on, the alarm tone sounds when the alarm time is reached. You can also turn on an Hourly Time Signal that causes the watch to beep twice every hour on the hour. The alarm number (1 through 5) indicates an alarm screen. :00 is shown for the alarm time when the Hourly Time Signal screen is on the display. All of the operations in this section are performed in the Alarm Mode, which you enter by pressing C.
Warning! Always make sure you are in a safe place whenever you are reading the display of the watch using the auto light switch. Be especially careful when running or engaged in any other activity that can result in accident or injury. Also take care that sudden illumination by the auto light switch does not surprise or distract others around you. When you are wearing the watch, make sure that its auto light switch is turned off before riding on a bicycle or operating a motorcycle or any other motor vehicle. Sudden and unintended operation of the auto light switch can create a distraction, which can result in a traffic accident and serious personal injury.
To turn the auto light switch on and off
In any mode except while a setting is flashing on the display, hold down L for about two seconds to toggle the auto light switch on ( displayed) or off ( not displayed). The auto light switch on indicator ( ) is on the display in all modes while the auto light switch is turned on. The auto light switch will remain on for a maximum of about six hours. After that, the auto light switch will turn off automatically in order to conserve battery power. The auto light switch is always disabled, regardless of its on/off setting, while the Hand Setting Mode setting screen is on the display. The backlight may not light right away if you raise the watch to your face while a barometric pressure or altitude measurement operation is in progress.

To set an alarm time

1. In the Alarm Mode, use D to scroll through the alarm screens until the one whose time you want to set is displayed.

Alarm1 Alarm 2 Alarm 3

Hourly Time Signal Alarm 5 Alarm 4
2. Hold down A until the hour digits of the alarm time start to flash, which indicates the setting screen. This automatically turns on the alarm.

Questions & Answers

Question: How does the altimeter work? Answer: Generally, air pressure and temperature decrease as altitude increases. This watch bases its altitude measurements on International Standard Atmosphere (ISA) values stipulated by the International Civil Aviation Organization (ICAO). These values define relationships between altitude, air pressure, and temperature.

Backlight Precautions

The electro-luminescent panel that provides illumination loses power after very long use. The illumination provided by the backlight may be hard to see when viewed under direct sunlight. The backlight automatically turns off whenever an alarm sounds. The watch may emit an audible sound whenever the display is illuminated. This is due to vibration of the EL panel used for illumination, and does not indicate malfunction. Frequent use of the backlight runs down the battery. The backlight is disabled while the watch is taking a depth reading (every three seconds).
Auto light switch precautions
Wearing the watch on the inside of your wrist, movement of your arm, or vibration of your arm can cause frequent activation of the auto light switch and illumination of the display. To avoid running down the battery, turn off the auto light switch whenever engaging in activities that might cause frequent illumination of the display.
More than 15 degrees too high
The backlight may not light if the face of the watch is more than 15 degrees above or below parallel. Make sure that the back of your hand is parallel to the ground. The backlight turns off in about two seconds, even if you keep the watch pointed towards your face.
If a temperature value is set, xxxx changes to the temperature value after a few seconds. The bottom part of the display shows OFF or a barometric pressure value (if set). If a barometric value is set, the display goes blank for four or five seconds, and then the currently set pressure value appears. If OFF or a value does not appear in the upper and lower parts of the display, press A again to exit the setting screen, and repeat step 2 of this procedure. 3. After waiting four or five seconds, press D (+) or B () to change the displayed temperature by 0.1C (or 0.2F). Pressing D and B at the same time returns to the factory calibration (OFF). 4. Press A to return to the Barometer/Thermometer Mode screen.
Static electricity or magnetic force can interfere with proper operation of the auto light switch. If the backlight does not light, try moving the watch back to the starting position (parallel with the ground) and then tilt it back toward you again. If this does not work, drop your arm all the way down so it hangs at your side, and then bring it back up again. Under certain conditions, the backlight may not light until about one second after you turn the face of the watch towards you. This does not necessarily indicate malfunction of the backlight. You may notice a very faint clicking sound coming from the watch when it is shaken back and forth. This sound is caused by mechanical operation of the auto light switch, and does not indicate a problem with the watch.

Calibrating the Barometric Pressure Sensor
The pressure sensor of this watch is calibrated at the factory before shipment and further adjustment is normally not required. If you notice serious errors in the barometric pressure readings produced by the watch, you can calibrate the sensor to correct the errors. Important! Incorrectly calibrating the barometric pressure sensor can result in incorrect readings. Before performing the calibration procedure, compare the readings produced by the watch with those of another reliable and accurate barometer.
Changing the Barometric Pressure and Temperature Units
Changing the barometric pressure units automatically restarts the barometric pressure history graph.
To calibrate the pressure sensor

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To change the barometric pressure and temperature units
1. Press B to enter the Barometer/Thermometer Mode. 2. Hold down A until OFF or xxxx starts to flash in the upper part of the display. This is the setting screen. Wait for at least four or five seconds before advancing to step 3. If you advance to step 3 too soon, your settings will not be configured correctly.
If a temperature value is set, xxxx changes to the temperature value after a few seconds. The bottom part of the display shows OFF or a barometric pressure value (if set). If a barometric value is set, the display goes blank for four or five seconds, and then the currently set pressure value appears. If OFF or a value does not appear in the upper and lower parts of the display, press A again to exit the setting screen, and repeat step 2 of this procedure.
4. Press C to move the flashing to the unit setting you want to change (C/F or hPa/inHg). 5. Use D to select the unit you want. 6. Press A to return to the Barometer/Thermometer Mode screen.
Calibrating the Temperature Sensor
The temperature sensor of this watch is calibrated at the factory before shipment, and further adjustment is normally not required. If you notice serious errors in the temperature readings produced by the watch, you can calibrate the sensor to correct the errors. Important! Incorrectly calibrating the temperature sensor can result in incorrect readings. Carefully read the following before doing anything. Compare the readings produced by the watch with those of another reliable and accurate thermometer. If adjustment is required, remove the watch from your wrist and wait for 20 or 30 minutes to give the temperature of the watch time to stabilize.
To calibrate the temperature sensor
1. Press B to enter the Barometer/ Thermometer Mode. 2. Hold down A until OFF or xxxx starts to flash in the upper part of the display. This is the setting screen. Wait for at least four or five seconds before advancing to step 3. If you advance to step 3 too soon, your settings will not be configured correctly.

3. After waiting four or five seconds, C to move the flashing to the pressure sensor calibration setting. At this time, OFF or the barometric pressure value should be flashing on the display. If OFF or the pressure value does not appear at this time, press A to return to the Barometer/Thermometer Mode screen, and perform step 2 again.

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4. Press D (+) or B () to change the displayed barometric pressure by 1 hPa (0.05 inHg). Pressing D and B at the same time returns to the factory calibration (OFF). 5. Press A to return to the Barometer/Thermometer Mode screen.
To change the altitude unit
1. Press D to enter the Altimeter Mode. 2. Hold down A until OFF appears (flashing) or until the display goes blank. This is the setting screen. Wait for four or five seconds before performing step 3, below. If you dont wait, there is the chance of setting value error. If the display went blank in step 2, the current reference value will appear (flashing) on the display after the four or five seconds pass.
If OFF or the current reference altitude value does not appear at this time, press A to return to the Altimeter Mode screen, and perform step 2 again. 3. Press C to move the flashing to the altitude unit setting. 4. Press D to select the unit you want (m or ft). 5. Press A to return to the Altimeter Mode screen. The altitude unit you select in the Altimeter Mode is also used in the Depth Gauge Mode.
To manually reset the reference depth to 0 meters (feet)
In the Depth Gauge Mode, press C and D at the same time. This resets the reference depth and causes the displayed depth to change to 0 meters (feet). Never perform the above operation while submerged.

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