Feature 6 Groups 8 Lens Sliver Coat Prism All Fully Multi Coated w/ ED Lens Rubber Armed to Protect against Crashes and Scratches. IP67 Waterproof Specification Magnification: 10x Objective Lens Dia.: 50mm / 1.97in Ocular Lens Dia.: 44mm / 1.73in Overall Length: 163mm / 6.42in Weight: 497 g / 17.53 oz Type of prism: BAK4 roof prism Number of lens: 6 groups 8 lens Lens Coating: Fully Multi Coated Field of view: 31.5ft @ 100yds Field of view: 10.5m @ 100m Field of view: 6Adeg Resolution: 4.5" Min. focal length: 7.5ft Min. focal length: 2.5m Eyecups: Twist up Focus type: Manual Waterproof: IP67 Nitrogen filled, weather proof and water resistant. Accessory: Softbag, strap, manual and lens cleaning cloth. Video Service