Specification: Max Output 1000 lumens Battery 1 x 18650 or 2 x CR123 A Working voltage 3.0V-6 V Entire length No Reflector Sleek aluminum Dimensions 142.9mm (L) x 25.4mm (Tube) x 41mm (Head) Material Aluminum alloy Lens Glass reinforced Weight 126g Fetaures: 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 & 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, & holster, the T4 is the perfect light for anyone looking for an easy to operate & high quality tactical flashlight. Package included:1 x Flashlight 1 x Lanyard 1 x Rubber band 1 x Storage bag