... :1.Out Speaker :40hm,2.0W, Φ36×14mm,110+/-3dB2.Inner Speaker:32 ohm,0.5W,Φ40mm ,110+/-5dB3.Jack:3 ... .5mm Stereo4.Frequ Range :20Hz-20KHz5.Max Input Power For Inner Driver Units:10mw6.Max Output Power For the Outter Driver ... Units:3w7.3.7V Lithium Battery,680mA8.Power Charge:DC ,5V9. ...