Specification: ● Laser colour: Red dot Laser wavelenght: 650nm ●20mw ● Battery type:one CR123A battery ● Surface deal: Throught Excellent Oxidation deal to black matt ● Tube diameter:0.98 inches(24.89mm) ● Length:3.58 inches(91.00mm) ● Weight:2.82 ounces（80g） ● Waterproof:rainproof,prevent rain and fog Feature ● Advanced,accurate laser designator with base x/y adjustment ● Laser has up to 200yd visibility in daylight and 2640yd visibility at night ● Quick target acquisition ● Precision accuracy ● Low power usage ● Lightweight,Compact,Shockproof ● Adjustment type:Allen wrench 　 Packing include 1 laser sight 1 20mm Mount 1 CR123 Lithium battery 1 Inmmovable switch 1 tail switch 2 Allen wrench