Feature a Roof Prism ED Lens, 6 Groups 8 Lens, High Definition Binocular, Lightweight and Compact a FMC with Dielectrical Coating Up to 88% Light Transmission, Providing Bright and Crystal Images a IPX7 Waterproof, 1m Deep Water for 30 Min, Ensuring Reliable Performance in All Weather Conditions Specification Magnification: 8x Objective Lens: 42 mm Exit Pupil: 5.25 mm Eye Relief: 19.5 mm / 0.77 in Lens Coating: Fully Multi-coated Prism Glass: BaK-4, Roof Prism Focus System: Center Linear Field of View: 423 ft @ 1000 yds Linear Field of View: 141 m @ 1000 m Angular Field of View: 8.1Adeg Diopter: Right Eyepiece Diopter Compensation: -4 to +4 Waterproof: IPX7 Housing Material: Semi-Aromatic Thermoplastic Size: 147x130x55 mm Eyecups: Twist-up Weight: 841 g / 29.67 oz Items in the Package: Pouch, Shoulder Strap, Lens Caps, Instructions, Cleaning Cloth, etc. Video