Specification: - Emitter: CREE XP-L LED - Maximum 400 lumens output, power by 1x AA battery - Maximum 800 lumens output, power by 1x 14500 battery - Circuit: Most efficiency constant current circuit, maximum runtime up to 171 hours - Material: Aircraft-grade aluminum body - Surface treatment: Premium Type III hard-anodized anti-abrasive finish - Clip: Titanium coated stainless steel clip. - Lens: Toughened ultra-clear glass lens with anti-reflective coating - Tail stand - Waterproof standard: IPX-8 (2 meters under water) - Impact resistance: 2 meters - Size: length 82mm x diameter 20mm - Weight: 39g(without battery) Brightness Levels: - Moonlight 2lm 171hrs, - Low 60lm 11hrs, - Medium 200lm 2.2hrs, - High 400lm 1.2hrs, - Strobe 400lm, - SOS 200lm, - Beacon 50lm (Power by Eneloop Pro Ni-Mh battery) - Moonlight 10lm 44hrs, - Low 100LM 12hrs, - Medium 320lm 1.7hrs, - High 800lm 0.4hrs - Strobe 800lm, - SOS 300lm, - Beacon 80lm. (Power by 14500 Lithium battery) Max light intensity: 1500cd (AA) / 2500cd (14500) Beam distance: 77m (AA) / 100m (14500) Shockproof standard: 2M Waterproof Standard: IPX-8, 2M.