About the Sony Nwzb173B 4Gb B170 Series Mp3 2012 Walkman Black

4GB capacity
New ZAPPIN™ Function allows you to find songs easily, and to listen to music in a new way
Built-in USB for easy drag and drop transfer of content
18 Hours Battery Life (Quick charge : 3 minutes charge 90 minutes play back)
FM Tuner and Voice/FM Recording Function
Colour Matching Power Illuminator

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

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. 970 (128kbps)
Maximum Recording Time	64 hrs 40 mins

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