Amazon.com : CamKix Head & Backpack Mount Bundle Compatible with GoPro Hero 8,7, 6, 5, Black, Session, Hero 4, Black, Silver, Hero+ LCD, 3+, 3, DJI Osmo Action - Head Strap/Hat Quick Clip/Backpack Clip Mount : Electronics
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
Amazon.com : GoPro Hero4 Black : Electronics
Amazon.com : GoPro Rechargeable Battery for HERO4 Black/HERO4 Silver (GoPro Official Accessory) : Electronics
Amazon.com : Suptig Replacement Waterproof Case Protective Housing for GoPro Hero 4, Hero 3+, Hero3 Outside Sport Camera for Underwater Use - Water Resistant up to 147ft (45m) : Electronics
Amazon.com : GoPro Hero4 Black : Electronics
GoPro Hero4 Black review: Smooth 4K video that's still the best in the category - CNET