Our flashlight produces 840 lumens and has the highest waterproof rating of IPX8, which means that the flashlight can withstand 6’ of submersion for 30 minutes in water. The 6061 aluminum casing is anodized black, and the internals are rugged enough to resist harsh vibration and survive drop impacts of up to 1.5 meters (5’). With the battery installed, this amazing flashlight weighs only 165 grams (5.8 oz). To fully utilize the potential of this flashlight, we provide you with all the clips and adapters to mount our flashlight onto your helmet, and we're Drift compatible! With our cutting edge technology, you will get 2.3 hours on high (in print, roughly 3 hours in actual), about 6 hours on medium, roughly 6 days on low, and about 300 feet of usable visibility.