Features:
1) MP3 playback
2) High speed USB interface (1.1), Plug-and-Play without cable, 7.5Mbps (max.)
3) Compatible with Windows 98/Me/2000/XP
4) Software-free for fast downloading MP3 from PC
5) Memory: 32/64/128/256/512MB flash memories embedded
6) Noise ratio: 90dB with 20kHz LPF
7) Possible rewrite cycles: >100,000 times
8) Retention period: >123 months
9) Earphone power output: 5mW
10) Output frequency range: 20Hz-20kHz
11) Size: 73 x 35 x 16mm
12) Weight: 28g (without batteries)
13) Battery: 1 x AAA, lasts for 12 hours (alkaline battery)
14) Voltage: 1.5V
15) Accessories: operation manual, driver disk, earphone, neck strap