Package list:
1 * BOYA BY-WM2G Microphone System
1 * Lavalier/Lapel Microphone
1 * GoPro Mini USB Adapter Cable
1 * 3.5mm to TRS Audio
Output Cable 1 * 3.5mm to TRRS 1 *
Cold Shoe Holder 2 * Foam
Protectors 1 * Hard Case
1 *User Manual Manufacture Original Packaging
?Clear Sound
Recording Compatible with GoPro Hero3 3+4, Smartphones, DSLR Cameras, Consumer Camcorders, PC etc. Lightweight and Compact for Easy Carrying Lavalier Omnidirectional Micro Hard Case Included Standard Camera Shoe Holder, gopro Adapter Cable and Clip Included Operating Range Up to 25m (82 feet) Power Supply Provided by Two AA Batteries (not included)
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
(32Ω.1KHz, 65mW output)
RF output level: 2mW
Headphone output level: 32Ω.65mW
Receive sensitivity: -85db+/- 3db/0db=1 V/Pa, 1kHz
Audio input connector: Mini jack 3.5mm
Operating range: 15m (49 feet.)
Power required: 1.5V dc (one AA size battery)
Consumption power: transmitter:
1.5V/120 mA Receiver:
1.5V/120 mA Battery
life: transmitter: approx. 3.0 hours
Receiver: Approx. 3 hours
The difference between BY-WM2G and BY-WM4 is the gopro adapter cable. BY-WM2G includes cable, while BY-WM4 does not.