Getting Music

To enjoy music on the player, you need to prepare the data on your computer. You can import music from audio CDs or from the Internet, etc. To import the data into your computer, use appropriate software, such as Windows Media Player 11 or 12. For detailed information on how to import data, refer to the Help of each software. For details about supported file formats, see Supported file format ( p.76).

Transferring Music

You can directly transfer data by dragging and dropping in Windows Explorer on your computer.
You can also transfer music using Windows Media Player 11 or 12. For details about usage, or support on Windows Media Player, refer to the Windows Media Player information from the following web site: http://support.microsoft.com/
Only MP3/WMA files can be played on the player ( p.76). If you turn on or restart the computer while the player is connected to the computer, the player may malfunction. In this case, press the RESET button of the player to reset it ( p.56). Disconnect the player from the computer before turning on or restarting the computer.
Connect the USB connector of the player to your computer.
Insert the USB connector fully.
Open [My Computer] or [Computer] - [WALKMAN] - [Storage
Media], and then select the folder you want to store the audio files. Data hierarchy may differ, depending on your computer environment.
Drag and drop the files to the selected folder.
Be careful not to accidentally bump or put stress on the player, especially when it is connected to your computer. It may be damaged. Do not disconnect the player while files are being transferred. If you do, the file being transferred may be damaged. If the player is disconnected while files are being transferred, unnecessary files may be left in the player. In this case, transfer usable files back to the computer and format the player ( p.51). Some files may not be played back on the player due to copyright protection. For details on the capacity for files and folders, see Maximum recordable number of files or folders (Approx.) ( p.77). Data hierarchy may differ, depending on your computer environment. It may take time to start up the player or display the file/folder list when many files or folders are stored on the player.

You can select the desired setting from the Home menu, select Settings] [Play Mode] the desired setting.
List of the [Play Mode] settings
Play mode type/Icon Description
[Normal]/No icon Repeat all/ Repeat 1 song/ Repeat shuffle all/
After the current song ends, all songs of the selected folder/ album/artist are played once. (Default setting) After the current song ends, all songs of the selected folder/ album/artist are played repeatedly. The current song is played repeatedly. After the current song ends, all songs of the selected folder/ album/artist are played in random order.
Setting the Sound Quality
You can emphasize the low range (Bass function) by pressing the BASS/PLAY MODE button. You can also change the sound quality according to the music genre, etc., by setting the equalizer.
Activating the Bass function
You can also emphasize the low range (Bass function) by pressing the BASS/ PLAY MODE button. The Bass function is activated by default.

BASS/PLAY MODE button

Press the BASS/PLAY MODE button.
Each time you press the BASS/PLAY MODE button, the Bass function is activated or deactivated. When the Bass function is activated, the [BASS] icon is displayed on the screen.
At high volume, the effect of the Bass function is limited for hearing safety.
If you turn on the Bass function while the equalizer setting is activated, the equalizer setting is disabled. The equalizer setting will be resumed when the Bass function is turned off. When the Bass function is activated, the power illuminator lights up ( p.6). However, the power illuminator does not light up during FM reception ( p.33), or when the [LED] setting is set to [LED OFF] ( p.47).
Changing the sound quality [Equalizer]
You can set your desired sound quality for each according to the music genre, etc.
List of the [Equalizer] settings
Setting item/Icon Description
[Settings] [Music Settings] [Equalizer] the desired equalizer setting.
[None]/No icon [Heavy]/ [Pop]/ [Jazz]/ [Unique]/ [Custom]/
Turns off the equalizer. (Default setting) Emphasizes the high and low ranges for a powerful sound. Stresses the middle range audio, ideal for vocals. Emphasizes the high and low ranges for a lively sound. Emphasizes the high and low ranges, so low levels can be heard more clearly. User-customizable sound settings. See p.31 for setting.
If you turn on the Bass function while the equalizer setting is activated, the equalizer setting is disabled. The equalizer setting will be resumed when the Bass function is turned off. While the Bass function is activated, you cannot change the equalizer setting. If the equalizer setting you select causes distortion, turn down the volume.

Deleting recorded FM radio programs
[FM] [Delete Rec Data] the recorded FM radio program you intend to delete [OK].
The selected FM radio program is deleted. Select [Cancel] to cancel deletion. To delete all recorded FM radio programs, select [Delete All].
Playing Back Recorded FM Radio Programs
[FM] [Play Rec Data] the recorded FM radio program you want. The playback screen appears and playback of the recorded FM radio program begins. About the playback screen, see Playback screen ( p.8). To listen to all recorded FM radio program, select [Play All].

Changing the FM Settings

To change the FM radio settings, select then select [FM Settings]. [Settings] from the Home menu,

[Scan Sensitivity]

When you select stations using the [FM Auto Preset] function ( p.35) or manual tuning mode ( p.33), the FM receiver may receive many unwanted broadcast stations because sensitivity is too high. In this case, set the reception to [Low]. [High] is set by default.

Sensitivity] [Low].

[Settings] [FM Settings] [Scan
To set the reception sensitivity back to the default, select [High].
Recording/Listening Voice Recording/Listening Voice

Recording Sound

You can record sound using the players built-in microphone and play the recorded sound files. The recorded sound is encoded into ADPCM format. When you play recorded sound files, select [Voice] from the Home menu ( p.43).

Microphone

You cannot record sound during FM reception (NWZ-B152F/B153F only) or with the [Settings] function. Select [Voice] or [Music Library] from the Home menu to record sound.
Press and hold the REC/STOP button.
The player goes into standby for recording. You can also record sound by pressing the REC/STOP button. Press the REC/STOP button. Rotate the shuttle switch to select [OK], and then press the button to confirm. Recording starts. To pause recording, press the button. Press it again to resume recording. The recording is saved as a file named [VRnnnn]*1 in the [Record] [Voice] folder.
*1File names are automatically assigned from [VR0001] to [VR9999].
The programs and sound files recorded by the player can be played back on the player ( p.43) or on a computer. You can change the bit rate of the audio file. For details, see Changing the Rec Settings ( p.44).

Settings] [OK].

[Settings] [Initialize] [Reset All
[COMPLETE] appears and the player is reset to the default settings. To cancel the operation, select [Cancel] on the confirmation screen.
If the date and time have already been set under [Set Date-Time], the date and time are not reset.
Formatting Memory [Format]
You can format the memory of the player. If the memory is formatted, all shortcut icons and files will be erased and all setting values returned to their defaults. Be sure to verify the files stored in memory prior to formatting and export any necessary files to the hard disk of your computer or other device beforehand.
When the remaining battery is low, you cannot format the player. Charge the battery before formatting. Do not format the memory using Windows Explorer. After formatting, set the date and time ( p.17, 45).

[Format] [OK].

[Settings] [Initialize]
[FORMATTING.] appears and formatting starts. When formatting is completed, [COMPLETE] appears. To cancel the operation, select [Cancel] on the confirmation screen.
Useful Facts Useful Facts

About Battery Life

By adjusting the settings or managing the power supply properly, it is possible to save battery power and use the player for a longer time. The following hints will yield a longer battery life.
Turn off the player manually If you press and hold the button, after [POWER OFF] appears, the display disappears and the player is turned off. The batteries are consumed a little in this status. Longer battery life settings You can save battery power by changing the default to Longer battery life setting items. For details on the battery life according to battery life setting, see Battery life (continuous playback) ( p.78).
Setting Default setting Longer battery life setting
Settings for screen Settings for sound effect
[Power Save Mode] ( p.47) [Equalizer] ( p.30) [BASS] ( p.29)
[Save ON Normal] [Save ON Super] [None] Activate [LED ON] [Mid] [None] Deactivate [LED OFF] [Low]
Settings for the power [LED] ( p.47) illuminator Settings for recording [Voice Record Codec] quality ( p.44)

Adjust data format and bit rate Playing time will vary, as battery charge can be affected by the format and bit rate of songs that are played. For details on charging time and usage time, see p.78.
What are Format and Bit Rate?

What is audio format?

Audio format refers to the method used to import audio data from the Internet or audio CDs to a computer, and then save it as an audio file. Common formats include MP3 and WMA, etc. MP3: MP3 (MPEG-1 Audio Layer3) is a common audio compression technology developed by the MPEG working group of the ISO (International Organization for Standardization). MP3 can compress audio files to about 1/10 the size of standard CD audio files. WMA: WMA (Windows Media Audio) is a common audio compression technology developed by Microsoft Corporation. The WMA format produces the same sound quality as that of the MP3 format with a smaller file size.
What is copyright protection? Certain music files or video files, etc., that you purchase from a music download service site, etc., may apply access control technologies, such as encryption, to limit usage and duplication of material, in accordance with copyright laws. What is bit rate? Bit rate refers to the amount of data used to store each second of audio, expressed in kbps (kilo bits per second), such as 64 kbps. Generally, higher bit rates provide better sound quality, but require more storage space for the same length of audio. What is the relationship between bit rate, sound quality, and storage size? Generally, higher bit rates provide better sound quality, but require more storage space for the same length of audio, so you can store fewer songs on the player. Lower bit rates enable you to store more songs, but at a lower sound quality.
If you import a song from a CD to your computer at a low bit rate, you cannot improve the songs sound quality by selecting a high bit rate when further transferring the song from the computer to the player.

Storing Data

You can store computer data into the memory of the player by transferring the data from your computer in Windows Explorer. If the player is connected to the computer, the memory appears in Windows Explorer as [WALKMAN].
Do not disconnect the player while [DATA ACCESS] appears on the player during data transfer. The data could be damaged. Do not format the memory of the player in Windows Explorer. If you format the player in Windows Explorer accidentally, do it again on the player ( p.51).
Upgrading the Players Firmware
You can update the players firmware. Installing the latest players firmware allows you to add new features to the player. For details on the latest firmware information and how to install it, visit the customer support Web sites ( p.74).
Download the update program to your computer from the Web site. Connect the player to your computer, and then start the update

The transferred songs cannot be found. The memory of the player was formatted using Windows Explorer. Format the memory using the [Format] menu of the player ( p.51). The player was disconnected from the computer while files were being transferred. Transfer usable files back to your computer and format the memory using the [Format] menu of the player ( p.51). There is no sound from the right channel of the headphones. Or the right channel sound is heard from both sides of the headphones. The headphone jack is not fully inserted. If the headphones are not connected correctly, sound will not be output properly. Connect the headphones into the jack until it clicks ( p.6). Playback has stopped suddenly. The remaining battery power is insufficient. Charge the battery power by connecting to the computer ( p.14). The player cannot be formatted. The remaining battery power is low or insufficient. Charge the battery power by connecting to the computer ( p.14). The player does not work. There is not enough free space in the memory. Connect the player to the computer and delete any unnecessary songs or files to increase free space on the player.

Display

The title of a song is not displayed correctly. If unsupported characters are included in the title, the title will be displayed without the unsupported characters. Rename the title with appropriate characters on the computer. Garbled characters are displayed. The wrong language is selected. Select the correct language from [Language] ( p.16, 49), and then transfer data to the player again.
The power does not turn on. The HOLD switch is set to the direction of the arrow (). Slide the HOLD switch to the opposite direction of the arrow () ( p.7). If you press the button immediately after turning off the player, the player does not start due to the shutting down process. Wait for a few seconds, then turn on the power. The remaining battery power is insufficient. Charge the battery power by connecting to the computer ( p.14). If the player does not react, even after charging the battery, press the RESET button to reset the player ( p.56). There is not enough free space in the memory. For details on the capacity for files and folders, see Maximum recordable number of files or folders (Approx.) ( p.77). At least 20 MB of free space is necessary to function normally. If you want to check the free space, open [My Computer] or [Computer] [WALKMAN], right-click [Storage Media]*1 to display the menu, and then select [Properties]. *1 Data hierarchy may differ, depending on your computer environment. Battery life is short. The operating temperature is below 5 C (41 F). Battery life becomes shorter due to the battery characteristics. This is not malfunction. Battery charging time is not enough. appears. Charge the battery until By adjusting the settings or managing the power supply properly, it is possible to save battery power and use the player for a longer time ( p.52). The battery needs to be replaced. Consult your nearest Sony dealer. The player cannot charge the battery. The player is not connected to a USB connector on your computer properly. Disconnect the player, and then reconnect it. The battery is charged in an ambient temperature out of the range of 5 C (41 F) to 35 C (95 F). icon appears. Charge the battery in an You cannot charge the battery when ambient temperature of 5 C (41 F) to 35 C (95 F). Your computer is not on. Turn on the computer. Your computer is in Sleep or Hibernate status. Disconnect the player from the computer, and then release the computer from Sleep or Hibernate status. Reconnect the player to the computer. Charging completes very quickly. If the battery is already almost fully charged when charging begins, little time is needed to reach full charge.

Recording

The remaining recording time remains the same even though files are deleted. Due to system restrictions, the remaining recording time may not improve if only short files are deleted. The player cannot record. There is not enough free space in the memory. Delete unnecessary files. Export the recorded files to a computer. Necessary free space may vary, depending on the bit rate or recording time. The maximum number of files that can be recorded has been reached. The maximum number of files that can be recorded is 999 files each for FM radio programs (NWZ-B152F/B153F only) and recorded sound files. Delete unnecessary files until recorded FM radio programs (NWZ-B152F/B153F only) and recorded sound files become 999 or less, respectively. Export the recorded files to a computer. The player is connected to a computer. Disconnect the player from the computer. The combined total of the recorded time and the remaining time does not equal the maximum recording time. When you record many short files, they may be recorded with automatically inserted blank spaces between files due to system restrictions. This causes an increase in total recorded time and results in the mismatch. Recorded files cannot be deleted. The file or the folder that cannot be deleted is set to be read-only on a computer. Delete the data using Windows Explorer. The battery power is low or exhausted. Charge the battery fully ( p.14). The folder is not deleted even though recorded files have all been deleted. Files other than the recorded files are included in the folder. Open the folder using Windows Explorer, and delete all the files other than files recorded by the player.
Connection with the computer
[CONNECTED USB] does not appear when the player is connected to the computer. The players USB connector is not connected to a USB connector on your computer properly. Disconnect the player, and then reconnect it. A USB hub is being used. Connect the player directly to a USB connector, as connection via a USB hub may not work. However, a USB hub that supplies power can be used. Another application is running on the computer. Disconnect the player, wait a few minutes, and reconnect it. If the problem persists, disconnect the player, restart the computer, and then reconnect the player. The USB connector on your computer may have a problem. Connect the players USB connector to another USB connector on your computer. The remaining battery power is insufficient. Charge the battery by connecting the player to a running computer for at least 5 minutes. When charging a depleted battery, the power illuminator blinks clockwise and nothing appears in the display. Audio files cannot be transferred to the player from your computer. Transferring may be stopped due to influences such as static electricity, etc. This happens to protect data information. Disconnect the player, then reconnect it. The players USB connector is not connected to a USB connector on your computer properly. Make sure that [DATA ACCESS] or [CONNECTED USB] appears on the display. Disconnect the player, and then reconnect it. There is not enough free space in the memory. Delete unnecessary songs to increase free space. Abnormal file(s) exists on the player. Transfer your necessary files back to your computer and format the player ( p.51). An audio file is damaged. Delete the audio file then transfer it again. When transferring the audio file, close any other applications to avoid file damage. You tried to transfer contents with copyright protection. You cannot transfer contents with copyright protection since the player does not support them. Only a small number of songs can be transferred to the player. There is not enough free space in the memory. Delete unnecessary songs to increase free space. Non-audio data is stored in the memory. Move non-audio files to the computer to increase free space. The player becomes unstable while it is connected to the computer. A USB hub is being used. Connect the player directly to a USB connector, as connection via a USB hub may not work. However, a USB hub that supplies power can be used.

enabled.

[FILE ERROR] The file cannot be read. The file is not normal. The player cannot play certain files because of incompatible formats. Transferring has been interrupted. Transfer the normal audio file back to the computer and then format the player. If the song which cannot be played is unnecessary, you can delete it from the memory. [HOLD] The player cannot be operated because the HOLD switch is set to the hold position. To operate the player, slide the HOLD switch to the opposite position ( p.7). [LOW BATTERY] The battery is low. Charge the battery ( p.14). [MEMORY FULL] There is not enough free space in the memory. You are trying to record an FM radio program (NWZ-B152F/B153F only) with the player already having 999 files of recorded FM radio programs. You are trying to record sound with the player already having 999 files of recorded sound files. Connect the player to the computer and delete any unnecessary songs or files to increase free space on the player. Delete unnecessary recorded FM radio programs. Delete unnecessary recorded sound files. [NO DATA] There are no audio files in the memory. Transfer audio files. [NO ITEM] There are no audio files in the selected item. Transfer audio files. Record sound. Record FM radio (NWZ-B152F/B153F only). There is no preset FM station (NWZ-B152F/B153F only). Preset FM broadcast stations. [READ ONLY] You are trying to delete read-only songs. Delete the data using Windows Explorer.
Additional Information Additional Information

Precautions

Notice for customers: the following information is only applicable to equipment sold in countries applying EU directives The manufacturer of this product is Sony Corporation, 1-7-1 Konan Minato-ku Tokyo, 108-0075 Japan. The Authorized Representative for EMC and product safety is Sony Deutschland GmbH, Hedelfinger Strasse 61, 70327 Stuttgart, Germany. For any service or guarantee matters, please refer to the addresses given in separate service or guarantee documents. Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union and other European countries with separate collection systems)

On safety Be sure not to short-circuit the terminals of the player with other metallic objects. Do not touch the rechargeable battery with bare hands if it is leaking. Since battery liquid may remain in the player, consult your nearest Sony dealer if the battery has leaked. If the liquid gets into your eyes, do not rub your eyes as it may lead to blindness. Wash out your eyes with clean water, and consult a doctor. Also, if the liquid gets on to your body or clothes, wash it off immediately. If you do not, it may cause burns or injury. If you get burned or injured by the liquid from the battery, consult a doctor. Do not pour water or put any foreign object in the player. Doing so may cause fire or electric shock. If this occurs, turn off the player immediately, disconnect the player, and consult your nearest Sony dealer or Sony Service Center. Do not put the player into fire. Do not take apart or remodel the player. Doing so can result in electric shock. Consult your nearest Sony dealer or Sony Service Center for exchange of rechargeable batteries, internal checks or repair.
On installation Do not put any heavy object on top of the player or apply a strong shock to the player. It may cause a malfunction or damage. Never use the player where it will be subjected to extremes of light, temperature, moisture or vibration. The player may become discolored, distorted or damaged. Never leave the player exposed to high temperature, such as in a car parked in the sun or under direct sunlight. Do not leave the player in a place subject to excessive dust. Do not leave the player on an unstable surface or in an inclined position. If the player causes interference to radio or television reception, turn the player off and move it away from the radio or television. When using the player, remember to follow the precautions below in order to avoid warping the cabinet or causing the player to malfunction.
Make sure not to sit down with the player in your back pocket.
Make sure not to put the player into a bag with the headphones/earphones cord wrapped around it and then subject the bag to strong impact.
Do not expose the player to water. The player is not waterproof. Remember to follow the precautions below.
Be careful not to drop the player into a sink or other container filled with water. Do not use the player in humid locations or bad weather, such as in the rain or snow. Do not get the player wet. If you touch the player with wet hands, or put the player in a damp article of clothing, the player may get wet and this may cause a malfunction of the player.

When you unplug the headphones from the player, make sure to hold the headphone plug to unplug it. Pulling the headphone cord itself may cause damage to the headphone cord.
Note on static electricity In particularly dry air conditions, mild tingling may be felt on your ears. This is a result of static electricity accumulated in the body, and not a malfunction of the player. The effect can be minimized by wearing clothes made from natural materials. On heat build-up Heat may build up in the player while charging if it is used for an extended period of time. On the headphones
Road safety Avoid listening with your headphones in situations where hearing must not be impaired. Preventing hearing damage Avoid using the headphones at a high volume. Hearing experts advise against continuous, loud and extended play. If you experience a ringing in your ears, reduce the volume or discontinue use. Do not turn the volume up high all at once, especially when using headphones. Turn up the volume gradually so that loud sound will not hurt your ears. Caring for others Keep the volume at a moderate level. This will allow you to hear outside sounds and to be considerate to the people around you.
Warning If there is lightning when you are using the player, take off the headphones immediately. If you experience an allergic reaction to the supplied headphones, stop using them at once and contact a doctor.
On the use When using a strap (sold separately), be careful to avoid hooking it on objects you pass by. Furthermore be careful not to swing the player by the strap to avoid bumping people. Refrain from using the player according to the in-flight announcements during take off or landing in an aircraft. Note that condensation may form temporarily in cases such as when the player is moved quickly from a low-temperature environment to a high temperature environment or used in a room that has a heater just turned on. Condensation creates a phenomenon where moisture in the air adheres to surfaces such as metal panels, etc., and then changes to liquid. If condensation forms in the player, leave it turned off until the condensation disappears. If you use the player with condensation present, a malfunction may result. On the LCD Do not push the LCD screen strongly. Color spots may appear or the LCD panel may be damaged. If the player is used in a cold place, ghosting may occur. This does not indicate a failure. If the player is used in a cold or hot place, contrast may be affected. On cleaning Clean the players case with a soft cloth, such as a cleaning cloth for eyeglasses. If the players case becomes very dirty, clean it with a soft cloth slightly moistened with water or a mild detergent solution. Do not use any type of abrasive pad, scouring powder, or solvent, such as alcohol or benzene, as it may mar the finish of the case. Be careful not to let water get into the player from the opening near the connector. Clean the headphone plug periodically. If you have any questions or problems concerning the player, please consult your nearest Sony dealer.

On Software Copyright laws prohibit reproducing the software or the manual accompanying it in whole or in part, or renting the software without the permission of the copyright holder. In no event will Sony be liable for any financial damage, or loss of profits, including claims made by third parties, arising out of the use of the software supplied with this player. The software provided with this player cannot be used with equipment other than that to which it is so designated. Please note that, due to continued efforts to improve quality, the software specifications may be changed without notice. Operation of this player with software other than that provided is not covered by the warranty. The ability to display the languages on supplied software will depend on the installed OS on your computer. For better results, please ensure that the installed OS is compatible with the desired language you want to display.
We do not guarantee all the languages will be able to be displayed properly on the supplied software. User-created characters and some special characters may not be displayed.
The explanations in this manual assume that you are familiar with the basic operations of Windows. For details on the use of your computer and operating system, please refer to the respective manuals.
About sample data*1 The player is pre-installed with sample data. If you delete the sample data, you cannot restore it, and we will not supply any replacement data.
In some countries/regions some sample data is not installed.
The recorded song is limited to private use only. Use of the song beyond this limit requires permission of the copyright holders. Sony is not responsible for incomplete recording/downloading or damaged data due to problems of the player or computer. Depending on the type of the text and characters, the text shown on the player may not be displayed properly on device. This is due to:
The capacity of the connected player. The player is not functioning normally. Content information is written in language or character that are not supported by the player.
About the customer support Web site If you have any questions or issues with a Sony product, or would like information on compatible items with a Sony product, visit the following Web sites.
For customers in the USA: http://www.sony.com/walkmansupport For customers in Canada: http://www.sony.ca/ElectronicsSupport/ For customers in Europe: http://support.sony-europe.com/DNA For customers in Latin America: http://www.sony-latin.com/index.crp For customers in other countries/regions: http://www.sony-asia.com/support For customers who purchased the overseas models: http://www.sony.co.jp/overseas/support/
License and Trademark Notice
WALKMAN and WALKMAN logo are registered trademarks of Sony Corporation. ZAPPIN and its logo are trademarks of Sony Corporation. Microsoft, Windows, Windows Vista and Windows Media are trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries. Adobe, Adobe Reader and Adobe Flash Player are trademarks or registered trademarks of Adobe Systems Incorporated in the United States and/or other countries. MPEG Layer-3 audio coding technology and patents licensed from Fraunhofer IIS and Thomson. IBM and PC/AT are registered trademarks of International Business Machines Corporation. Macintosh is a trademark of Apple Inc. All other trademarks and registered trademarks are trademarks or registered trademarks of their respective holders. In this manual, TM and marks are not specified. Program 2010 Sony Corporation Documentation 2010 Sony Corporation

Specifications

Supported file format
Audio Formats (Codec) MP3 Media File format: MP3 (MPEG-1 Layer3) file format File extension:.mp3 Bit rate: 32 to 320 kbps (Supports variable bit rate (VBR)) Sampling frequency*1: 32, 44.1, 48 kHz Media File format: ASF file format File extension:.wma Bit rate: 32 to 192 kbps (Supports variable bit rate (VBR)) Sampling frequency*1: 44.1 kHz
*1 Sampling frequency may not correspond to all encoders.
Maximum recordable number of songs and time (Approx.)
The approximate times are based on the case in which you transfer or record only 4 minutes songs in the MP3 format. Other playable audio file format song numbers and times may differ from MP3 format.

NWZ-B152/B152F

Bit rate 48 kbps 64 kbps 128 kbps 256 kbps 320 kbps Number 1,190 Time 83 hr. 20 min. 63 hr. 20 min. 31 hr. 20 min. 16 hr. 00 min. 12 hr. 40 min.

NWZ-B153/B153F

Number 2,550 1,Time 170 hr. 00 min. 130 hr. 00 min. 65 hr. 20 min. 32 hr. 40 min. 26 hr. 00 min.
Maximum recordable time (Approx.)
The times below are estimated for the case where only FM (NWZ-B152F/B153F only) or Voice audio files are stored. The time may differ, depending on the conditions under which the player is used.

Codec*

Time 47 hr. 50 min. 95 hr. 40 min. 191 hr. 20 min. 23 hr. 50 min.
Time 23 hr. 20 min. 46 hr. 40 min. 93 hr. 20 min. 11 hr. 40 min.
Voice Recording High Voice Recording Mid Voice Recording Low FM Recording
* The player uses MS-ADPCM codec for recording the sound and the FM programs.
Maximum recordable number of files or folders (Approx.)
Files: 2,640 Folders: 500
Capacity (User available capacity)*1
NWZ-B152/B152F: 2 GB (Approx. more than 1.73 GB = 1,853,587,456 bytes) NWZ-B153/B153F: 4 GB (Approx. more than 3.54 GB = 3,798,007,808 bytes)
Available storage capacity of the player may vary. A portion of the memory is used for data management functions.

Output (headphones)

Frequency response 20 to 20,000 Hz (when playing data file, single signal measurement)
FM radio (NWZ-B152F/B153F only)
Preset 30 presets FM Frequency range 87.5 to 108.0 MHz The frequency is changed by 0.1 MHz.

IF (FM)

Unsupported

Antenna

Headphone cord antenna

Interface

Headphone: Stereo mini-jack Hi-Speed USB (USB 2.0 compliant)

Recorded data..38, 42 Songs...32
E [Equalizer].. 30 Explorer.. 19
R Radio.. 33 REC/STOP button.5, 37, 41 Recharging.. 14 Recording.. 37, 41 Remaining battery.. 8, 14 Repeat... 28 [Reset All Settings].. 50 RESET button.. 7, 56 Reset the player.. 56 S [Scan Sensitivity].. 40 Search for songs.. 26 [Set Date-Time]. 17, 45 [Settings].. 10, 45 Shuffle... 28 Shuttle switch. 5 Sound quality.. 29, 30 Strap hole... 7 Supplied items. 79 T Time setting.. 17, 45 Transferring.. 19 Troubleshooting.. 56 U USB connector..7, 14, 19 V [Voice].. 10, 41 [Voice Record Codec]. 44 VOL +/ button.. 5 Volume..5, 46, 71 W WMA..19, 53, 76 Z ZAP button.. 5, 24 ZAPPIN playback.. 23 [ZAPPIN Range].. 25