Unboxed Boya BY-WM4 Pro-K2 2.4GHz Dual-Channel Digital Wireless Microphone System

What is an unboxed deal?
This simply means the product has damaged, unsealed or missing retail packaging, and is therefore sold at a much reduced price. In some cases, the item may have very minor signs of handling or use. The product has been quality checked and confirmed in good resaleable condition.

The Boya BY-WM4 Pro is a new generation 2.4GHz wireless microphone system, with dual-channel wireless receiver, and easy-to-use, compact design. Designed for videographers on a limited budget and video hobbyists, it is ideal for interviews, run-and-gun video shoots, vlog productions, and more.

The BY-WM4 Pro-K2 kit is for capturing audio with dual subjects. It comprises two body-pack transmitters (TX4 Pro), one portable receiver (RX4 Pro) and two omnidirectional lavalier/lapel microphones. Also included with this system is a shoe mount adapter, 3.5mm to TRS and 3.5mm to TRRS output cables, and a carrying case.

The BY-WM4 Pro has wide compatibility. With both TRS cable and TRRS output cables included, it can be used with smartphone, tablet, DSLR camera, camcorder, audio recorder computer, and more. It offers excellent performance and high-quality transmission despite its compact size. With the transmitter and receiver each weighing only 47g and measuring just 45 x 70 x 35mm, the system still maintains the high signal-to-noise ratio above 84dB and low distortion rate below 0.05%. The system works at distances of up to 60m (with line of sight), and, operating on the 2.4 GHz frequency band, offers flexibility and gives a low-latency audio transmission with no video sync issues.

* Dual-channel wireless receiver
* Digital 2.4GHz frequency band
* Super-clear recording sound
* Compatible with smartphones, DSLR cameras, consumer camcorders, PCs etc.
* Lightweight and compact for easy carrying
* Easy to use
* Omnidirectional lavalier microphone
* Hard case included
* Standard camera shoe mount and clip included
* Up to 60m operation range (without obstacle)
* Power supplied by two AAA batteries for transmitter and receiver


Contents:
1x RX4 Pro Portable receiver  
2x TX4 Pro Body-pack transmitter  
2x Lavalier/lapel microphone
2x Windscreen
2x Microphone holder clip
1x 3.5mm to TRS audio output cable
1x 3.5mm to TRRS audio output cable
1x Shoe mount adapter
1x Hard carry case

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 (without obstacle)
Power Requirements: 3V DC (Two AAA-size Batteries)
Consumption Power: Transmitter 3V/70mA /  Receiver 3V/70mA
Dimensions: Receiver 45 x 70 x 35mm / Transmitter 45 x 70 x 35mm  
Weight: Receiver 47g / Transmitter 47g