Model No : Sony NWZ-B173F

Specifications :

General
Memory (Available capacity may vary)  -  4GB
Display  -  3-line LCD
FM Tuner -  Yes
Input / Output Terminals  -   Headphone / Hi-speed USB (2.0)
Maximum Power Output (16 ohms/mW)  -   5+5mW
Power Source  -   Built-in Li-ion Rechargeable Battery / USB power (from a computer via a USB connector of the player)
Recharging Method  -   USB-based charging
Recharge Time  -  Approx. 70 minutes (full charge) (Quick Charge - 3 min charge for up to 90 min Playback)
Maximum Dimensions (W x H x D)   -  89.2 x 24.0 x 15.0mm
Weight  -   Approx. 28g
Supplied Accessories  - Headphones, Quick Start Guide

Music
Sound Settings  -   Bass Boost / 5 Band Equalizer (Heavy / Pop / Jazz / Unique / Custom)
Searching Methods  -   All Songs / Album / Artist / Genre / Release Year / Playlists / Folder / ZAPPIN (Short / Long)
Play Mode  -  Normal / Repeat All / Repeat 1 Song / Repeat Shuffle All
Continuous Playback Time  -   Approx. 18 hrs (128kbps)
Number of Songs  -   Approx. 440 // 970 (128kbps)
Maximum Recording Time  -   29 hrs 20 mins // 64 hrs 40 mins

File Formats Supported
MP3 Audio  - Bit rate: 32 to 320kbps (Supports variable bit rate (VBR)), Sampling frequencies: 32, 44.1, 48kHz
WMA Audio  - Bit rate: 32 to 192kbps (Supports variable bit rate (VBR)), Sampling frequencies: 44.1kHz

Colors  -  Black,Pink,Red and Gold

Warranty  -  One Year Manufacturer Warranty.