... 32Ω±15% Resonance 220Hz±20%HZ Sound Pressure: 130±3 dB at Distortion: 5%less Pure tone Sine wave ... 32G maxBattery and PowerOuter cylinder type 10440 systems of lithium battery 360 mah, standby 12 to 18 hours. ... auto search channel, One button to switch easily..Mp 3 AudioSupport MP3, wma etc. One button to switch ... 3.5 to 3.5 line (7g) ,Iphone line (9g), HTC line,(9g),Nokia N95 line, pc line, 10440 lithium ...