500-Lumens; 140 meter beam; Runs 1.5 hours. Engineered optic produces a concentrated beam with optimum peripheral illumination. Durable, anodized machined aluminum construction; IPX7; Waterproof to 1 meter for 30 minutes. Includes high switch (mounted), low switch, 1 CR123A lithium battery and key kit. Safe off feature prevents accidental activation; Saves batteries. Key Kit, Light, User Guide, High Switch (Mounted), Low Switch, CR123A Lithium Battery (1). 2.58″D x 1.18″W x 1.27H. 1 CR123A batteries required.