GoPro Connect Cable to Intercom AUX port – Rugged Radios
Amazon.com : GoPro 3.5mm Mic Adapter (GoPro Official Accessory) : Headphone Adapters : Electronics
NFlightCam Audio Cable Keeper
NFlightCam GoPro Audio Adapter Cable
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3.5mm Female to Mini USB Male Mic Adapter Audio Cable- GoPro 1 2 3 Hero3+ Hero 4 | eBay
Rugged Radios USB-C Audio Adapter for GoPro Camera - Summit 4x4 Company
GoPro Hero3 Recorder Adapter for Helicopters - Pilot USA
Amazon.com : CamDesign 3.5mm Female to Male 5-Pin Mini USB Microphone Adapter, Audio Transfer Adapter Cable Cord, Compatible with GoPro Action Cameras with Mini USB Port, GoPro Hero 3 3+ 4 (Adapter Only) : Electronics
3.5mm Microphone Mini USB External Mic Audio Adapter Transfer Cable Wire For GoPro Hero 4 3+ Action Camera Accessories
Pilot USA - GoPro HERO5, 6 Audio Recorder Adapter for Bose Panel Mount – Pilots HQ LLC.
Amazon.com: Movo GM100 Clip-on Lavalier Microphone for Compatible with GoPro HERO3, HERO3+ and HERO4 Black, White and Silver Editions - Includes Mic Adapter for Go Pro