Overview
BOYA BY-WM5 wireless microphone is for use with any DSLR GoPro HERO 3 3+ 4. The 2.4 GHz GFSK system result in strong anti-interference, good security and stability. Two-way communication, but only sound from transmitter can be recorded. The operation range is 50m without obstacle, 360 degree all-round revolveis workable.

Features:
1.Compatible with DSLR cameras, camcorders, audio recorder and GoPro HERO 3 3+ 4 etc. & designed for portable wireless operation, such as film work, podcasting, performances and other audio or video applications.
2.The 2.4GHZ GFSK system result in strong anti-interference, good security and stability.
3.The operation range is 50m without obstacle, 360 degree all-round revolves workable and the maximum distance can reach up to 80m.
4.You can adjust the volume through VOL+ and VOL- volume control.
5.The lapel clip makes it easy to carry.
6.The low-cut filter will prevent low end noise and record conversation clearly.
8.The AAA batteries, super long 4 hours of battery life (not included);
9.5 Seconds Speed Channel Set and Easy to Operate;

Specifications:
RF Modulation: GFSK (Gauss frequency Shift Keying)
Frequency band: 2.4GHz (2405-2478MHz)
Frequency response: 35Hz-14KHz±3dB
Signal/Noise: 76dB or more Distortion: 0.1% or less (32?,1KHz,65mW output) RF
output level: 32?,65mW
Reception sensitivity: -85dB +/- 3dB / 0dB=1V/Pa, 1kHz
Audio input connector: 3.5mm mini jack
Operation range: 50m (164ft.)
Power requirements: powered by two AAA batteries
Battery life: 3.5 to 4 hours of runtime
Transmitter Dimensions: 2.36 x 3.3 x 1.1"; 4.37 oz
Receiver Dimensions: 2.36 x 3.3 x 1.61"; 4.89 oz

Packages:
1 x Transmitter with Belt Clip
1 x Receiver with Camera Shoe
1 x Lavalier Microphone
1 x Earphone 1x Earphone with Speaker
1 x Audio Signal Cable
1x Audio cable convertor
1 x English Manual

• 2.4GHz Wireless system features internal boost antennas with a 164-foot (50-meter) range
• Includes Transmitter with Belt Clip, Receiver with Camera Shoe/Tripod Mount, Lavalier & 2 Earphones
• Receiver headphone features second isolated microphone to communicate with the transmitter headphone (audio does not pass through to output)
• Transmitter and receiver are each powered by two AAA batteries (not included) which provide 3.5-4 hours of runtime
• Compatible with Nikon Canon Sony DSLR GoPro Hero 3 3+ 4 audio recorder etc

2.4GHz Wireless system features internal boost antennas with a 164-foot (50-meter) rangeMICNOVA