Original GoPro Hero 10 9 8 7 6 5 Black Dusk Pro 3.5mm Mic Adapter AAMIC-001 818279015034 | eBay
3.5 mm (1/8 in) TRS Connectivity Camcorder Microphones for GoPro for sale | eBay
QIUNIU External Microphone Mic + Transparent Skeleton Housing Case for GoPro Hero 4 3+ 3 Action Camera for Go Pro Accessories|Sports Camcorder Cases| - AliExpress
GoPro Microphone Guide (All Models) 6 External Mics, Adapters - Click Like This