The perfect microphone for a budget vlogger or video creator. BOYA has created a wireless microphone that can be used with your phone.BY-WM4 PRO is designed for videographers with limited budget and video hobbyists. It is a new generation of 2.4 GHz wireless microphone system, dual channel for recording audio with dual subjects for your smartphones, tablets, DSLR cameras, consumer camcorders, PCs, etc.BOYA BY-WM4 PRO-K6 is a digital plug-in 2.4GHz Wireless system, is for easily using for your Android smartphone and other Type-C devices. The system consists of two body-pack transmitters (TX4 Pro) and a miniature receiver with a Type-c connector (BY-WM4 PRO RXU), two omnidirectional lavalier microphones.Product specifications:RF Modulation: GFSK (Gauss Frequency Shift Keying)Frequency band: 2.4GHz (2405-2478MHz)Frequency response: 35Hz-14KHz±3dBSignal/Noise: 84dB or moreDistortion: 0.05% or less (32Ω,1 KHz,65mW output)RF output level: 3mWEarphone output level: 32Ω,65mWReception sensitivity: -90dB +/- 3dB / 0dB=1V/Pa, 1kHzAudio input connector: 3.5mm mini jackOperation range: 60m without obstacle)Power requirements: BY-WM4 PRO RXU: Supplied by USB Type-C devicePlug: BY-WM4 PRO RXU: USB Type-C ConnectorTransmitter: 3V/70mAReceiver: 3V/70mAEAN: 6971008026832SKU: BY-WM4 Pro-K6