Specification: no battery supplied With free 20mm mounts Laser Wavelength: 532nm Output: 1mw Length: 12cm Tube Diameter: 25.4mm Can be adjusted with tool Simply locks on to the top of the telescopic rifle scope Suitable for 1"(25.4mm) tube diameter rifle scope Obtained a new level of short/long range laser targeting ability Advanced laser optics give a superb laser sight Adjustable windage and evelation Provide clear pionting dot even in day light and clear laser beam in the dark or low light

Features: With "8" figured mount for laser 1"(25.4mm) and scope 1"(25.4mm) Additional mount provide which can hold the laser and fit on any 20mm width weaver rail base Use 1x CR123A lithium disposable battery (excluded) ( Dot not use recharge battery on laser) Remote coiled pressuer switch: Press pressuer pad to on and release to off End cap switch: Rotation is close to light