Brand Name: VandlionCompatible device: Action CamerasCompatible device: PhonesHigh-concerned chemical: NoneModel: K8Polar Pattern: OmnidirectionalMicrophone Type: Lavalier MicrophoneConnectivity: WireLessOrigin: Mainland ChinaTransmission distance: 20MSensitivity: -42dBBattery Capacity(mAh): 75mAhReal-time Monitoring: YesFrequency Range: 20-20KHZTransducer: Condenser MicrophoneSNR: 64 dBmCharging input voltage: DC4.8 to 5.4VMicrophone working current: 11 to 12mAWorking time: About 6HMicrophone turn-on current: 10 to 11MACharging interface: Type-C or Light-ningTransmission delay: 30MSReceiver working current: 20 to 21mACharge time: About 1.5HReceiver turn-on current: 8 to 9mACharge current: About 60mAReceiver turn-off current: 2 to 3uAFrequency Range: 2.4GHz