BOYA BY-WM4 PRO-K2 Wireless Lavalier Lapel Mic Omnidirectional Microphone System Audio Recording for Canon DSLR Camera

BOYA BY-WM4 PRO-K2 Wireless Lavalier Lapel Mic Omnidirectional Microphone System Audio Recording for Canon DSLR Camera Digital wireless microphone system(dual transmitters + one receiver), compatible with smartphones, DSLR cameras, consumer camcorders, PCs, etc. Adopts 2.4G wireless technology, with strong anti-interference ability and high performance; up to 50m(164ft) operation range(without obstacle). Omnidirectional lavalier microphone for clear sound recording, suitable for interviews, audio recording, video recording, etc. Standard camera shoe mount and backside clip included, which allows you to mount the transmitter and receiver conveniently. Lightweight and compact for easy carrying, and comes with hard case for convenient storage and carry about.  Specifications:RF Modulation: GFSK (Gauss Frequency Shift Keying)Frequency band: 2.4G (2405-2478MHz)Frequency response: 35Hz-14KHz±3dBSignal/Noise: 84dB or moreDistortion: 0.05% or less (32ohm, 1 KHz, 65 mW output)FR output level: 3mWEarphone output level: 32hom, 65mWReception sensitivity: -90dB+/- 3dB / 0dB=1V/Pa, 1KHzAudio input connector: 3.5mm mini jackOperation range: 50m (164 ft)(without obstacle)Power requirement: 2 * AAA battery(not included)Consumption power: Transmitter: 3V/70mA                   Receiver: 3V/70mATransmitter & Receiver Size: 4.5 * 7 * 3.5cm/ 1.8 * 2.8 * 1.4inTransmitter & Receiver Weight: 47g/ 1.7oz(without battery)Note:The smartphones and stabilizers showed in the picture are not included.Package List:2 * Transmitter1 * Receiver2 * Lapel Microphone1 * 3.5mm to TRS Audio Output Cable1 * 3.5mm to TRRS Audio Output Cable1 * Cold Shoe Mount1 * Hard Case