Feature:

Clip-on microphone design, convenient to use
Low handling noise.Frequency Range: 35Hz ~ 18KHz.
Signal/Noise: 74dB SPL
Sensitivity: -30dB +/-3dB / 0dB=1V/Pa, 1kHz
Connector: 3.5mm plug, Mini USB plug
Cable length: 1.2m
Compatible with GoPro Hero cameras, perfect for 4 3+ 3 , Camcorders

Package included:

1 x Microphone for GoPro
1 x USB Cable Adapter for GoPro

Detail pictures: