Complete AC/ DC Power Kit for GoPro Hero 3+ and Hero 4 (Not compatible with Hero 3 & older) Includes USB Power Cable,Water-resistant Backdoor Passthrough,and 3 Adapter Plugs (US & European AC & car DC) Everything you need to provide unlimited corded power from just about anywhere. The frustrating limitations caused by short battery life and overheating can be mostly eliminated. Ideal for time-lapse, long exposure, security or other extended shooting applications. Can be used with portable power banks or auxiliary battery packs for extra mobility. Extended backdoor allows cable pass-through while maintaining waterproof protection. (Tested for weather and splash resistance.)