Dimmable to control brightness and runtime with all LEDs on. Powerful LED headlamp beam. Up to 4X brighter than standard LED technology. Pivots to direct light where you need it. Durable light is water resistant with a shatterproof lens. Ideal as hard hat lights for your construction projects. Includes 3 AAA Energizer® MAX® batteries. 40 meter beam distance. 1 meter impact resistance. IPX4 water resistant.