ETpower&reg; 1800LM XM-L T6 LED Zoomable Torch Tactical Aluminum Flashlight Light Adjustable focus(No Battery) Excellent waterproof, suitable for outdoor environment, adverse weather conditions. Adjustable focus, can adjust its focus for different circumstances.Internal wiring applies the high efficient booster circuit. With Zoom-in & Zoom-out functions, push the head to zoom.With a portable lanyard for you to easy carry it. Made of high quality 6061T aluminum alloy, this flashlight is sturdy and durable enough for long time daily using. 5 Modes: High / Middle / Low/Flash/SOS.Power by: 1x 18650 3.7v Battery(not include),Dimensions: Length: 161mm Head Diameter: 38mm Tail Diameter: 31mm