6MM Dual Moving Coil Driver Unit More Delicate and Pure SoundWireless Version : V5.0Transmission Distance : 10 MFrequency Response : 20-20000HzOutput Sensitivity : 92dBMicrophone Sensitivity : -42dBBattery Capacity : 200mAhRated Power : 3mWDrive Unit : 4 / 6mmCable Length : 62cmCharging Time : about 1.5h