Amazon.com : SOONSUN Standard Waterproof Case Dive Housing for GoPro Hero 4 Black, Hero 4 Silver, Hero 3+, Hero 3 Cameras with BacPac Backdoor for Extended Battery or Bacpac Screen – Waterproof Up to 40 Meters : Electronics
Brunton All Day 2.0 Extended Battery Pack for GoPro Hero, Hero 3+, Hero 4 - ASD
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Brunton All Day 2.0 Extended Battery Pack for GoPro Hero, Hero 3+, Hero 4 - ASD