Speaker size:40mmImpedance:30ohmFrequency:20 HZ---20k HzSPL:113dBVoltage:20MW Maximum OutputMicrophone size:6 x 2.7mmFeature:omnidirectionalFrequency:100---10k HzVibrator SPL:-45dBVoltage:2.5---5VVibrator and other partsSize:30mmCable length: Approx. 2.0 M brush finished cable..