Brand:BluetoothaudioTransmitter!#!amp!*!Receiver BluetoothStandard:Bluetoothv3.0 ModelNumber:ZC32200 TransmissionDistance::10m/33ft Battery::RechargeableLi-polymerbattery(250mAh) WorkingTime::9Hours ChargingTime::2Hours Bluetoothprofilesupported::A2DP SwitchableMode::RX/TX AudioPort::3.5mm Color::Black Material::ABS Dimension::7*4.5*1cm/2.75*1.77*0.39inch