NFlightCam Helicopter Intercom Cable for GoPro Hero5/Hero6/Hero7/Hero8/Hero9/Hero10
Amazon.com: V2 18FT ATC Radio Audio Recording Cable with Dual Output for Gopro Phone Audio Recorder Extra Long 18ft / 5meter Airplane Cockpit Intercom with USB Power HERO3 / HERO3+ / HERO4,
NFlightCam Cockpit Kit for GoPro Hero3, Hero3+, Hero4 – Nflightcam.com