The M20SX is an extended-range flashlight with a rugged aluminum body and stainless steel strike bezel. The maximum output has been improved to 820 lumens. It features a tailcap and side switch for quick and easy use. The Javelot uses two CR123 batteries (included) or a 18650 battery. The LED lamp has been processed by unique technology, which improves the light range to 370 meters. M20SX JAVELOT has abundant tactical accessories such as weapon mount, filter, and remote pressure switch. It is a good assistant for hunting, law enforcement, search& rescue and outdoors.