Hilight Tactical Weaver Grip 1000 Lumens Weapon Light w/Single Laser Lithium Metal/CR123A. This versatile combo mounts on Weaver or Picatinny rails. Powered by 2x CR123a batteries (included) or a single1x 18650 battery (not inlcuded); single laser model also requires an additional CR2 battery (included). Specifications for Hilight Tactical Weaver Grip and 1000 Lumens Weapon Light: Manufacturer: Hilight Light Output: 1000 lumens Battery Type: Lithium Metal CR123A Material: Aluminum Length: 3 in Width: 2 in Height: 5.5 in Mount: Weaver Water Resistant Mark: 2 m Water Resistance Level: IPX-7 Package Contents: Hilight Tactical Weaver Grip and 1000 Lumens Weapon Light 2x CR123a batteries Mounting hardware Laser adjustment wrench Hilight TGL20: Tactical Weaver Grip 1000 Lumens Weapon Light w/Single Laser Lithium Metal/CR123A