Specifications:
1) Dimensions: 92.2 x 26.8 x 26.8mm
2) Weight: 40.5g
3) USB: standard USD1.1 port
4) FM radio: 87.5-108.5MHz
5) SNR: 90dB
6) Frequency response range: 20Hz-20kHz
7) Music sampling rate: 32-210kbps
8) Storage temp.: -20 ~ 55oC
9) Operating temp.:-10 ~ 55oC
10) Operating relative humidity: 20-90% (40oC)
11) Storage relative humidity: 2-93% (40oC)

Features:
1) Built in 128M / 256M flash memory
2) LCD: multi-colorful backlight
3) Music file format: MP3, WMA
4) Built-in FM tuner with FM recording
5) 5 equalizer modes: Jazz, Classic, Rock, Pop, Normal
6) All sorts of music playing modes: one track, all repeat, etc.
7) High quality digital voice recording and A-B repeat
8) Lyric display synchronous
9) Free drive and using as flash disk
10) About 10 hours replay time per 'AAA' battery