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 : 3-Pack AHDBT-401 High-Capacity Replacement Batteries with Rapid 3-Channel Charger for GoPro Hero4. UltraPro Bundle Includes: Camera Cleaning Kit, Screen Protector, Mini Travel Tripod : Electronics
Amazon.com : GoPro Rechargeable Battery for HERO4 Black/HERO4 Silver (GoPro Official Accessory) : Electronics