1.input  voltage ;5.0V
2.output  voltage: 3.7v=1000MA
3.built-in recharge:Li-ion Batt
4.output power :2*3 watts(RMS)  THD=10%
5.impedance :4 ohm
6.can connect with your MP3 ,MP4,Mobilephone ,computer,IPOD dan also can play with  the SD MMC  and Flash memory
7.come with a remote control
8. built -in FM Radio
9. support  SD/MMC card