Maximum brightness 650 lumens,maximum range USB Type-C charging technology,with charging indication function; Tail tactical switch,light up with one touch; Neck function switch, one-touch dimming and shifting; With power display and gear memory function; Built-in inteligent temperature control system to prevent over heating during use of the flashlight and improve the comfort of use; Constant current circuit,constant brightness, Low voltage warning,when the remaining power is too low,remind the user to re-place it in time; Anti-reverse connection design to prevent the battery from being installed in reverse and causing damage to the circuit; Made of aviation aluminum AL6061-T6,the surface is treated with military grade three hard anodized anti-wear treatment; Dimensions:180mm(.