Roof Prism ED Lens with Reticle, 6 Groups 8 Lens, Silver Coated Prism, Fully Multi Coated Lens Phase Correction Coat, Dielectrical Coating, 88% Light Transmission, Wide Field of View Made from High Strength Semi-Aromatic Thermoplastic, with Non-Slip Rubber Armor A Versatile Ranging Reticle That Can Be Used to Judge Both the Height and Distance to a Target Rotating Mil-L Reticle That Can be Rotated within Field of View, Simply by Adjusting the Left Eyecup, Ensuring Precise and Adaptable Performance Magnification 10x Objective Lens Dia 42 mm / 1.6 in Exit Pupil 4.2 mm / 0.16 in Eye Relief 12.2 mm / 0.48 in Lens Coating Fully Multi-coated Min. Focal Distance 2.5 m Prism Glass BaK-4, Roof Prism Focus System Center Linear Field of View 36.6 ft @ 1000 yds Linear Field of View 12.2 m @ 1000 m Angular Field of View 7 ° Diopter Right Eyepiece Diopter Compensation -4 to +4 Waterproof IPX7 Material Aluminum Alloy Housing Material Semi-aromatic Thermoplastic Size 147x130x55 mm Eyecups Twist-up Weight (including caps) 804 g / 28.36 oz Finish Black Items in the Package Pouch, Shoulder Strap, Lens Caps, Instruction, Cleaning Cloth, etc.