3.25″ overall. Water-resistant. Impact-resistant. OSRAM P9 LED. 180m beam distance. Modes: Momentary On (1300 lumens); Constant On (1300 lumens, 3h 15m runtime). Ambidextrous rotary 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.