Gopro Hero 4 BLACK Edition 4K Action Camera Camcorder CHDHX-401 - Walmart.com
Review: GoPro Hero 4 Black brings high frame rates to high-resolution video | AppleInsider
GoPro Hero4 Silver Review | PCMag
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
GoPro HERO 4 Black vs HERO5 Black - Comparison Review