WindFire Waterproof Cree T6 Led 1000 lm 1 Mode Tactical Flashlight Torch with Pressure Switch and 1 " Rail Barrel Mount for Picatinny Quad Rail Rifle (18650 Battery not included) 1000 lumens White light output produced by Cree XML -T6 LED Material: 6061T Aluminium, brand new, high quality Suitable for 25mm Flashlight & Laser Sight Tube mounting need Powered by: 1 x 3.7V 18650 battery (battery not included) Come with a barrel mount, Waterproof, can use it in rainy day