1.Portable mp3 player can work without any external equipment.
2.3-in-1 jack for charging,data exchange & built-in power switch
3.support format: MP1/MP2/MP3/WMA/WAV/ASF/WMV
4.port mode: USB 2.0
5.EQ mode: pop/classic/soft/jazz/dbb/rock/normal
6.Long playing time: continuously play for 350-400 minutes after fully charged
7.battery voltage: 3.7 V rechargeable Li battery
8.output power:55mw
9.headphone output power: 5mw
10.requency response: 20Hz-20KHz
11.battery charge time:about 3 hours
12.working current: 35-40 MA
13.info/noise ratio: 86dB
14: Color: silver