3.25″ overall. Water resistant. Impact resistant. Modes: Momentary On (1300 lumens); Constant On (1300 lumens, 3h 15m runtime); Green Laser (<5mW, 43h runtime). 180m beam distance. Ambidextrous rear white-light trigger and side laser switch. Attaches securely to MIL-STD-1913 and Glock-style rails. Accepts optional remote switches. Requires (2) CR123A batteries (included), or (2) 16340 batteries (not included). Aluminum construction. Color: Black. Boxed with hanging tab.