Nitecore EC4 1000 Lumen high intensity CREE XM-L2 LED tactical die-cast flashlight with 4X EdisonBright CR123A Lithium Batteries The world FIRST die-cast flashlight: Nitecore EC4 Die-cast unibody aluminum alloy construction. Excellent Brightness and Durability: Nitecore EC4 Utilizes a CREE XM-L2 U2 LED and innovative "Precision Digital Optics Technology", maximum output up to 1000 Lumens Smart Mode adjustment: Nitecore EC4 Dual switch design offers unprecedented ease of use, 5 brightness levels: Turbo, High, Mid, Low, Ultralow, and 3 concealed special modes: Strobe, SOS, Location beacon. User-friendly design: Nitecore EC4 highest level cooling fins add 30% cooling surface than ordinary, and its' die-cast body ensure heat is distributed evenly and rapidly to surface Bundle includes four EdisonBright CR123A lithium batteries