Highlights: Aluminum construction Features a XP-G R5 Cree LED emitter Maximum accepted voltage input: 18V (3.6~18V)1000m A current output measured at LED (manufacturer rated)5-mode driver circuitry: Hi gt; Mid gt; Lo gt; Fast Strobe gt; SOSDiameter at bezel edge: 26.5mm Height without support spring: 29.3mm Height with support spring: 38.5mm Specification: Dimensions (cm): 2.6 x 2.6 x 3.7 Weight (Kg): 0.0196 Package Contents:1 x Flashlight