Specification:Max Output1000 lumensBattery1 x 18650 or 2 x CR123AWorking voltage3.0V-6VEntire lengthNoReflectorSleek aluminumDimensions142.9mm(L) x 25.4mm(Tube) x 41mm(Head)MaterialAluminum alloyLensGlass reinforcedWeight126gFetaures:Professional Tactical Flashlight, can choose different modes on one flashlight: MODE 1: ON/OFF immediately.MODE 2: Loosen the head for 25%, users can have ON,ON/OFF,STROBE and SOS all through pressing the tail switch.Output rang of 5 to 1,000 lumens.This light features compact tail switch for easy operation.Users can have momentary ON,ON/OFF switching, strobe, SOS all through pressing the tail switch.With a lanyard hole, pocket clip, and holster, the T4 is the perfect light for anyone looking for an easy to operate and high quality tactical flashlight.Package included:1 x Flashlight1 x Lanyard1 x Rubber band1 x Storage bag