Amazon.com : GoPro 3.5mm Mic Adapter (GoPro Official Accessory) : Headphone Adapters : Electronics
Amazon.com : CamDesign 3.5mm Female to Mini USB Male Microphone Adapter Audio Transfer Cable Cord Compatible with GoPro Hero 1 2 3 Hero3+ Hero4 & Sports : Electronics
Amazon.com : V2 Housing Case Vlogging Frame with Microphone Cold Shoe Mount Compatible for GoPro Hero 7 6 5 Mic Audio Adapter Action Camera Accessories : Electronics
GoPro HERO 5,6,7,8,9 Digital Audio Recorder Headset Adapter