Mic Battery Capacity: 70mAh/ 0.259Wh/ Weight 1.8g

Charging Box Battery Capacity: 600mAh/ 2.22Wh/ Weight : 11.9g

Charging Current: 1.0A, Working Current: 16mA~19mA, Consumption Power: 0.25W, Rated Voltage: 3.7V, Wireless Transmission: 2.4GHZ, Audio Delay: 22mS, Sensitivity: [-38dB], Adapter: 5V /1A, Transmission Distance: 15 meters (turn around)-100 meters (visible), Microphone: 360-degree omnidirectional, Frequency Responses: 20Hz-20KHZ, Signal to Noise Ratio: [94dB] Maximum, Sound Pressure Level: 115dBSPL,  Sampling Frequency and Sampling Depth: 48KHz 24bit , Input Voltage: DC4.8-5.2V, Woking Time : Single microphone use for about 6 hours / 24 hours with charging box, Charging Box: A fully charged charging box can charge the microphone about 4 times