4-16x50 AO 2 in 1 Tactical Rifle Scope Multifunctional Combo Field of View(@100yards) 9.84' ~ 22.97' Length 13" Click Value 1/4' @ 100 yards Eye Relief 3" ~ 3.4" Exit Pupil (mm/in) 12.5-4.2/0.49-0.17 Objective Diameter 50mm Brightness control Red 5 levels / Green 5 levels 90% transmittance Wide field of sharp and clear images for quick target acquisition. 4-16x Locking Ring Magnification x Obj. Diameter: 4-16x50 Windage and elevation Upgraded Model, improves the problem of the old model. Comes with a rangefinder scope and a red laser sight 4-16x50 2-in-1 Scope Combo Red Laser Riflescope has 5 levels of brightness, Red and Green illuminations, each with easier targeting in dark night environment. Red laser sight with independent switch, Class IIIA laser, less than 2mW. Package Include 1 x 4-16X50 mm Rifle Scope 1 x Red Laser Sight 3 x Allen Wrenches 1 x Cleaning Cloth 1 x Instruction manual 1 x Lens Cover 1 x CR2032 3 x AG13 Windage and Elevation Adjusted Eye Piece Adjusted Easily attaches to 20mm Weaver and Picatinny rails