5 5/8" overall. Black HAIII military grade hard-anodized finish areo-grade aluminum alloy housing. Features five individual light sources: two main LEDs plus bi-lateral secondary red, green and blue LEDS. Four selectable modes of output: red, green, blue and white. Primary white light: CREE XP-G2(R5) LED, up to 440 lumens, beam distance - up to 190m, runtime - up to 400 hours, candlepower - up to 9000cd. Primary green light: up to 185 lumens, beam distance - up to 170m, runtime - up to 45 hours, candlepower - up to 7250cd. Green light is sensitive for human eyes. Toughened ultra-clear mineral glass with anti-reflective coating. Double side-switch interface with integrated power indicator light allows for one-handed operation while providing easy access to numerous birghtness levels and functions, including a unique multi-colored warning/hazard mode which rapidly alternates between red, green and blue. Instant-start - enter turbo mode directly. Integrated "Precision Digital Optics Tech".