Use as a flashlight, lantern, bike headlight or signal light. The three ultra bright white LEDs are magnified using Cateye's OptiCube™ lens and reflector technology to put out over 180 candlepower. The innovative magnetic switch allows for a waterproof seal to 50 m/165 ft. The unique, built-in mount and strap can be adjusted to attach to different size handlebars, stems, seat posts, tree branches or even on a helmet. Once attached the mount rotates to aim where you want it. Removeable lantern cap and 3 AAA batteries included. Run time of 30 hours on constant and 60 hours on flashing. Weight: 2.6 oz. (78g). Size: 3.7" long.