Product Review

This unit the best advantage is microphone, it is special design for gopro cam, filter out noise, so the recording sound-quality is much better than the gopro internal one's
Unit is extremely lightweight, designed for optimum portability and comfort, and delivers some of the clearest recorded sound you can find. The Lavalier Clip-on Omnidirectional Condenser
Microphone is compatible with the HERO3 & HERO3+. DOES NOT fit Gopro 5, 2,1 and sjcam, xiaoyi etc. other brand cameras Microphone
performance is much better than most built-in camera microphones: outstanding for interviews, podcasts, dictation, and much more. This microphone is a workhorse, never get caught with mushy, muffled sound again.

Specifications:
Type: Electret condenser microphone
Left and right channel stereo recording
Noise Level: 34dB SPL
Frequency Response: 100-15,000Hz
Plug: mini usb(5Pin)
Maximum Input Sound Level: 110dB SPL (THD 1 percent at 1kHz) . Color: Black
Compatible Models: GoPro Hero 3/3+/4,(DOES NOT fit Gopro 5, 2,1 and sjcam, xiaoyi etc. other brand cameras)
Size: Adapter length: 4.9 inch ; Mic lable length: 97 inch.
Net:29g
Packing Include:
1 x Mini Microphone
1xConnector
1x Mic Windshield
1x PANNOVO Bag