With a powerful 700 lumens, our E54 Flashlight is especially suited for outdoor and emergency use. Made with aircraft grade aluminum and a stainless steel protective coating, the E54 is light but tough. An anti-roll and anti-slip designs insures stability. Waterproof and submersible to up to 2 meters. The ultra-clear glass lens with anti-reflective coating uses a Cree XM-L LED bulb to cast a beam up to 300 meters. Uses rechargeable (4) CR123A or (2) 3.7V 18650 Li-ion batteries not included.