6.75" overall. Water resistant. Impact resistant. Modes: High (387 lumens, 1h 45m runtime), Medium (193 lumens, 4h 30m runtime), Low (30 lumens, 13h runtime). 139m beam distance. Five selectable programs. Type III hard anodized finish. Full time battery status charge indication. Requires (2) AA batteries (included), or (3) CR123A batteries (not included). Boxed with hanging tab.