YDP-SPORT Cree XML2 Led Scuba Diving Flashlight Torch Power by 26650 Rechargeable Battery (Included) with Charger ( Included) Underwater 100M for Diving and Outdoor Lighting 1.Used the Ultra Cree XML2 LEDs Powered by one 26650 Li-ion 3.7V 4000mAh rechargeable battery, it is including the NightCore HC30, this diving flashlight is very bright. 2.Easy to operate,This is diving flashlight is magnetic control switch, press swith for a long time you can adjustable output from zero to full brightness, press switch fo a short time is the function on/off the flashlight. 3.Battery indicator function: This diving flashlight has a ring around it which flashes green periodically when off, which might sort of be a nice feature to help find the flashlight at night. It show green when electricity is full, it show red when not enough. 4.Best diving flashlight: Premium quality for your wonderful experience. IP68 Waterproof to 100 meters good for diving and scuba, this one is made by anodized aircraft 6061aluminum Aluminum Alloy,this is not the same as the cheap diving flashlight 5.Complete package included Flashlight Led Diving Torch, Rechargeable Batteries, Charger, Manual. Ready to use,The casing is built excellently and looks tough and solid. It is made from aluminum alloy