TWO SOLUTIONS IN ONE: Use as a storage box, or as a charger to simultaneously charge for 3 GoPro Hero 12 11 10 9 black batteries. Keeps water droplets, dust and debris out while in storage COMPACT DESIGN: Small, lightweight charger allows for easy portability in your purse, briefcase, luggage or camera bag. POWER YOUR Hero 12/11/10/9: Easily boost running time of your GoPro action camera and record every moment with 1750mAh replacement batteries. Total charging time for 3 batteries: 2 hours EASY PLUG IN: Type C USB Interface: USB Type-C's user-friendly design lets you always insert the connector to your devices in the right way, and plug and unplug in either direction SAFETY GUARANTEED: Charger and replacement batteries are fully protected against overcharging, short circuits, electronic shock, over discharge, over-temperature, over current, over voltage