Boya wireless microphone mw3

New Boya wireless microphone BY-MW3 , Non-used, for iPhone devices only. Color: Black Transmission Type: 2.4G Poplar Drawing: Multi-directional Frequency Property: 20 Hz-16 kHz Signal/noise ratio: 80 dB Sensitivity: -42 dB Scope: 50 meters (unimpeded) Output Power HF: 6 decibel meter Transmission battery capacity: 95mAh Charger time: about 2 hours Transmitter autonomy: about 9 hours Receiver power consumption: supplier of external devices.