2.4G Wireless Microphone Lavalier for Smartphone DSLR Camera, Lapel Microphone System and case.

Works great, got an extra for one project and no longer need. BY-WM4 PRO-K1 TX+RX Designed for videographers on a limited budget and video hobbyists, BY-WM4 PRO is a new generation 2.4 GHz wireless microphone,with dual-Channel for receiver, easy-to-use and compact design. It's ideal for interviews, run-and-gun video shoots, vlog production and more. Highlights Super-clear recording sound Compatible with smartphones, DSLR camerasconsumer camcorders, PCS etc Lightweight and compact for easy carrying Omnidirectional lavalier microphone Easy to usee Hard case included Standard camera shoe mount and clip included Up to 50m (164ft)operation range (without obstacle) Power supplied by two AAA batteries for both transmitter and receiver Specifications RF Modulation: GFSK (Gauss frequency Shift Keying) Frequency band: 2.4GHz (2(contact info removed)MHz) Frequency response: 35Hz-14KHz±3dB Signal/Noise: 84dB or more Distortion: 0.05% or less (32Ω,1 KHz,65mW output) RF output level: 3 mW Earphone output level: 32Ω,65mW Reception sensitivity: -90dB +/- 3dB / 0dB=1V/Pa, 1kHz Consumption power: Transmitter: 3V/120 mA Receiver: 3V/120 mA Battery life: Transmitter: Approx. 6.0 hours Receiver: Approx. 6 hours Dimensions: Transmitter: 45mm x 70mm x35mm (W/H/D) Receiver: 45mm x 70mm x35mm (W/H/D)