Perfect Compatibility: Compatible with GoPro Hero 12, 11, 10, 9, 8, 7, 6, 5, 4, 3+, 3, 2, Fusion, Hero Session, GoPro Max, SJCAM, DJI OSMO 1/2/3/4 action camera. When using with the cold shoe adapter (included), it also fits for any devices which has a cold shoe slot such as a DSLR/SLR camera. Support USB Charging: Batteries can be recharged through the short Micro USB cable which comes in the box, no need to carry an extra charger dock, convenient to carry in travel. Waterproof up to 164ft (50M): Solid aluminum alloy shell and water-tight backdoor to ensure excellent waterproof rating at 164ft (50m), ideal accessory for deep diving filming in dark. Dual Battery Powered: Powered by 2 AHDBT-401 batteries (Included), providing ultra-long working time up to 9 hours (120 lumens at "Target Spot" mode only). Batteries fit for GoPro HERO4 camera. Maximum 450 Lumens & 3 Modes Switchable: One-button control to switch 3 different modes at 6 kinds of brightness from 120 to 450 lumens, lights up your footage in different lighting environments.