Ledsniperadjustable Cree T6 1800lm Tactical Flashlight Wholekit + Mount&pressure Switch&picatinny Rail&charger&18650 High power mode with maximum output of 1800 lumens output(Max) Internal wiring applies the high efficient booster circuit, working voltage is wide and can utilize the batteries in the largest extent. Powered by : 1x 18650 3.7v battery One button switch with3-mode : Max,zoom in and zoom out