6.25" overall. Lanyard. Anti-roll design. Impact resistant. Water resistant. CREE XP-L HI V3 LED. Secondary RGB illumination. Maximum 1000 lumens and maximum 708 hour runtime. Four brightness levels and 6 special modes. 462m beam distance. Includes USB cable. Features: high efficiency regulation circuit; intelligent charging circuit with voltage detection for safe and rapid charge; integrated micro USB charging port; intelligent memory functions; reverse polarity protection; and clear mineral glass crystal with anti-reflective coating. High-precision, long-range reflector. Waterproof in accordance with IPX-8 (Submersible to two meters). Requires 1 18650 battery (not included) , or 2 CR123A batteries (not included). Black nylon belt sheath. Aluminum construction. Color: Black.