6.75″ overall. Water resistant. Impact resistant. Rechargeable. Lanyard. 100 yard beam distance. 1800 max lumens. Modes: Long distance, wide angle, long distance plus wide angle, low, and flashing. Wide angle technology. Power bank: draw power from the internal battery to charge other USB devices. Includes USB charging cable. Runtime: 2-24 hours. Pistol grip. Requires (1) Lithium battery (included), or (1) CR123A battery (included).