Designed for videographers on a limited budget and video hobbyists.
BOYA BY-WM4 PRO system is a new generation 2.4 GHz wireless microphone, dual-Channel for capturing audio with dual subjects to your smartphones, tablets, DSLR cameras, consumer camcorders, PCs etc.

It’s a compact and extraordinarily easy-to-use wireless microphone system for recording crisp and clear speech, and interviews. Omnidirectional lavalier mic included is suitable for performers who which to exhibit freedom of movement in their visual recordings. Additionally, the system offers a up to 60m (197ft) line-of-sight operation range.


Product Highlights:

• Dual-Channel Wireless Receiver
• Digital 2.4 GHz Frequency Brand
• Super-clear recording sound
• Compatible with smartphones, DSLR
cameras consumer camcorders, PCs etc.
• Lightweight and compact for easy carrying
• Omnidirectional lavalier microphone
• Hard case included
• Standard camera shoe mount and clip included
• Up to 60m(197ft)operation range(without obstacle)
• Power supplied by two AAA batteries for transmitter and receiver

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 (32O,1 KHz,65mW output)
• RF output level: 3mW
• Earphone output level: 32O,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 (1.8*2.8*1.4 inches)
• Transmitter: 45x70x35mm (1.8*2.8*1.4 inches)
• Weight: Receiver: 47g (1.7 oz)
• Transmitter: 47g (1.7 oz)