Brite Strike BD-198-MH-2C Tactical Blue Dot Series 310-Lumens Momentary and Hi 2-Cell LED Flashlight Max Output: up to 310 lumens with a runtime of 2 hours Waterproof casing made from high-grade durable aerospace aluminum Crenelated Strike Crown on front and back of flashlight Tactical Touch push button for Momentary/Hi Battery: Two 123A Lithium (included)