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.S/N: >=80dB
6.impedance :4 ohm
7.can  connect  with your  MP3 ,Mobilephone ,Computer ,IPOD and also can play with the  SD MMC and Flash memory
8.come with a remote  control
9.can be built -in FM Radio
10.support SD/MMcC card