This 1-8x24mm riflescope has features our illuminated BTR-1 reticle for fast and accurate target acquisition. To speed up switching between magnification weve given you two Throw Down Power Change Levers (PCL) of different length. The 6 mil per revolution turrets are capped to protect them from bumps and hard use. It utilizes a 30mm main tube, illumination is provided via CR2032 battery, and its IPX7 waterproof. Features Illuminated BTR-1 reticle Throw Down Power Change Lever, 2 lengths Capped turrets to protect against hard use. IPX7 Waterproof construction – O-ring sealed optics stay dry inside, when immersed in three feet of water for up to 30 minutes. Fully Multi Coated Optics – Multiple layers of coatings on all lens surfaces increase light transmission and image brightness. Whats in the box: 1-8×24 riflescope; scope covers; short throw lever; long throw lever; Spudz lens cloth; multitool; instruction sheet; Quick Start Guide. Specifications Magnification: 1-8x Objective Lens: 24mm Reticle: Illuminated BTR-1 Focal Plane: Second Main Tube: 30mm Diameter Parallax: Set at 100 Yards Eye Relief: 3.6\