4 1/8" overall. CREE XP-G R5 LED. Turbo mode with 140 lumen output and 1 hour, 30 minute runtime. Four customizable modes: strobe; low - 5 lumen output with 60 hour runtime; medium - 20 lumen output with 18 hour runtime; and high - 50 lumen output with 5 hour, 30 minute runtime. 86m beam distance. Uses one AA battery. Includes detachable pocket clip, black cord wrist lanyard, spare plastic cap, and spare O-ring. Multi-Task Series. Aerospace-grade aluminum alloy construction with anodized black HAIII mil-spec finish. Body is knurled for a sure grip. Features: high efficiency current circuit board; intelligent memory functions; anti-roll design; reverse polarity protection; broad voltage drive circuit; and clear mineral glass crystal with anti-reflective coating. Aluminum reflector ensures a smooth and powerful beam. Waterproof in accordance with IPX-8 (Submersible to two meters). Impact resistant to 1.5 meters. Compatible with rechargeable and non-rechargeable batteries. (Batteries not included). Highly versatile and practical lights designed for a multitude of users and environments including search and rescue, hunting, tactical, outdoors, and industrial. Boxed with hanging tab.