Attention: This TF-9049R Tatical Flashlight is ONLY for Remington 870, will not fit OTHER MODELS nor other shotguns. And for the Remington 870, will not fit the ONEs whose barrel/magaine tube is not flat. High for a far-reaching light: 120 meters distance, 500 real Lumen, mount on the end of magazine tube. Durable & Shockproof & Waterproof Body: Sturdy aircraft aluminum body, type III hard anodizing surface with 1.5 m drop resistance, IPX6 waterproof, assembled with waterproof o-rings and anti-abrasive coating lens so the flashlight can be used in the raining day. Mounting steps: remove the original magazine tube cap , mount the light onto the magazine tube screws. 3 Modes: Steady, Strobe, Momentary on. TOUGHSOUL TF-9049R flashlight is powered by a 3V CR123A battery (included, NOT rechargeable). Attention: This TF-9049R Tatical Flashlight is ONLY for Remington 870, will not fit OTHER MODELS nor other shotguns. And for the Remington 870, will not fit the ONEs whose barrel/magaine tube is not flat(reference picture 3).