Fit for Ipod, MP3/MP4，computer，music mobile, PSP game player,etc. digital amplifiers, clear sound

Specification:
1) Pocket-size, high quality stereo sound, built-in digital amplifier
2) Built-in lithium battery , 5~10 hours Long playback time hours
3) Case material:Pure ABS
4) Rate power: 2W x 2
5) Frequency range：50HZ~20KHZ
6) Impedance: 4HM(Ω);Speaker unit:36mm;
7) Input voltage: DC5(V)
8) Audio In: headphone jack (3.5mm)