Display
Size/resolution
0.9-inch (2.26 cm) 128 x 36 Pixels

Panel type
OLED

Interface
USB
Hi-Speed USB (USB 2.0 compliant)

Headphone
Stereo mini-jack

FM radio
FM Frequency range
87.5 MHz to 108.0 MHz

Antenna
Headphone cord antenna

Output (headphones)
Frequency response

20 Hz to 20,000 Hz (when playing data file, single signal measurement)

Sound Effects
5 Band equalizer (None/Heavy/Pop/Jazz/Unique/Custom) & Bass Boost

Power Source
Built-in Rechargeable lithium-ion Battery

USB power (from a computer via a USB connector of the player)

Charging Time
USB-based charging
Approx. 70 minutes

Operating temperature
5 °C to 35 °C (41 ºF to 95 ºF)

Dimensions
w/h/d, projecting parts not included
84.5　mm x 22.2　mm x 13.4　mm (3 3/8 inches x 7/8 inches x 17/32 inches)

w/h/d
84.8　mm x 23.6　mm x 15.3　mm (3 3/8 inches x 15/16 inches x 8/15 inches)

Mass
30 g (1.1 oz)

Capacity (User available capacity) (*1)
NWZ-B183: 4 GB

NWZ-B183F: 4 GB

Music (Music player)
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 (*2): 32, 44.1, 48 kHz


WMA (*1)

Media File format: ASF file format

File extension: .wma

Bit rate: 32 to 192 kbps (Supports variable bit rate (VBR))

Sampling frequency (*2) : 44.1 kHz

(*1) Copyright protected WMA/WMV files cannot be played back.

(*2) Sampling frequency may not correspond to all encoders.

The time below may differ depending on ambient temperature or the status of use.

Battery life (continuous playback)
Actual battery life may vary depending on settings. The estimated battery usage hours shown below are based on typical usage conditions with “Settings for battery life measurement” as below.

Music (NWZ-B183/B183F)
MP3 128 kbps

approx. 20 Hrs

WMA 128 kbps

approx. 15 Hrs

FM (NWZ-B183F)
approx. 6 Hrs

FM REC (NWZ-B183F)
approx. 3 Hrs

Note
Even if the player is turned off for an extended period, a small amount of battery power is still consumed.
Battery life may vary depending on volume setting, conditions of use and ambient temperature.
Settings for battery life measurement
Common Settings

Screen Off Timer (*1): 15 Seconds (default setting: 30 Seconds)

Brightness: 1 (default setting: 3)


Music Settings

Equalizer: Off (default setting: Off)

Bass Boost: Bass Boost Off (default setting: Bass Boost On)

(*1) The longer the waiting time, the shorter the battery life for continuous music playback.z