Emitter: 12x Cree XP-G3- Maximum output: 8000 lumens (Cree XP-G3 LED)- Maximum beam intensity: 20000cd (Cree XP-G3 LED), Features: - Maximum beam distance: 280M - Waterproof: IPX-8 (2 meter under water) - Impact resistance: 1.5meters - Working voltage: 2.8v - 4.35v (Over discharge protection) - Driver: Most efficiency constant current circuit - Material: Aircraft-grade aluminum body - Surface treatment: Premium Type III hard-anodized anti-abrasive finish - Lens: Toughhened ultra-clear glass lens with anti-reflective coating - Tail stand Brightness Levels /Runtime (Cree XP-G3 LED): Moonlight: 0.1-30lumens, 2month-5days; Low: 120lumens, 30hrs; Medium1: 500lumens, 7.5hrs; Medium2: 1000lumens, 3.5hrs; High 2500lumens 2h, Turbo 8000lumens; Strobe 8000lumens. Dimensions: - Length: 98mm, - Diameter: 55mm, - Weight: 278g (without battery)