BOYA Microphone BY-WM4 Pro Lavalier Wireless

Wireless system with transmitter and receiver and mosquito microphone
Compatible with iPhone, iPad and most Android devices
Range up to 15 meters

BOYA BY-WM4 is a 2.4 GHz wireless system specially designed for use with iPhone, iPad and most Android devices, but it can also be used with DSLR camera, camcorder and PC.

The system consists of a transmitter with bracket for the belt, a wireless receiver for camera mounting, an all-around mosquito microphone, 3.5 mm telephoto TRS cable, 3.5 mm telephoto TRRS connector, case, windscreen and microphone clip.

The receiver has a microphone and headphone jack, and the transmitter is equipped with a microphone and line input.

Specifications
RF Modulation:   GFSK (Gauss frequency Shift Keying)
Frequency band:   2.4GHz (2405-2478MHz)
Frequency response:   35Hz-14KHz±3dB
Signal/Noise:   84dB or more
Distortion:   0.05% or less (32Ω,1 KHz,65mW output)
RF output level:   3mW
Earphone output level:   32Ω,65mW
Reception sensitivity:   -90dB +/- 3dB / 0dB=1V/Pa, 1kHz
Audio input connector:   3.5mm mini jack
Operation range:   60m (197ft) (without obstacle)
Power requirements:   3V DC (Two AAA size batteries)
Consumption power:   Transmitter: 3V/70mA
Receiver：3V/70mA
Dimensions:   Receiver: 45x70x35mm
Transmitter: 45x70x35mm
Weight:   Receiver: 47g
Transmitter: 47g