NOT for Hero 5 and up! In order to use this cable on Hero5 and up, you need to purchase the 3.5mm Mic Adapter from GoPro. NOT for Session! Works on Gopro Hero 3 / Hero 3+ / Hero 4. For Hero 5, 6, 7, 8, 9, 10, 11, 12, 13 and up, you will need the 3.5mm mic adapter from GoPro.
For GoPro versions other than Hero 3 and 4, you will need a 3.5mm mic adapter to connect this cable to your GoPro via the adapter. The 3.5mm mic adapter can be purchased from GoPro's official site. For your convenience, here's the link:
https://gopro.com/en/us/shop/mounts-accessories/pro-3.5mm-mic-adapter/AAMIC-001.html

Extra Long 18ft/5meter Cable from Power Source to Audio Output.
Dual Output Plug (both mini USB for Gopro and 3.5mm minijack for smartphone or audio recorder)
Use this cable to record ATC and intercom radio to your Gopro.
Crystal clear audio recording with no ambient noise.
Whatever you hear in your headset will be recorded to your GoPro.
It comes with USB power supply cable that can be powered by USB power bank for longer run time of your Gopro.
Works on Gopro Hero 3 / Hero 3+ / Hero 4. For other models, you will need the 3.5mm mic adapter from GoPro.
In order to use this cable on Hero5 and up, you need to purchase the audio adapter from GoPro.
Compatible with standar aviation headset such as Bose A20.