Nikon 10x50 Sporter EX Features: Waterproof (up to 1 m for 10 minutes) and fog-proof with O-ring seals and nitrogen gas for added resistance to the elements. High-eyepoint design provides a clear field view, even when wearing glasses. Multilayer-coated lenses deliver superior light transmission for bright, clear images with well-balanced color. Close-focusing distance of only 5 m. Turn-and-slide rubber eyecups with multi-click settings make it easy to position your eye at the correct eyepoint. Eco-glass optics, free of lead and arsenic, are used for all lenses and prisms. Specifications: Magnification 10X Effective Objective Diameter 50mm Field of View (real) 5.6° Field of View (apparent) 52.1° Apparent field of view is calculated based on the ISO14132-1:2002 standard. Field of View at 1,000m 98m Exit Pupil 5.0mm Brightness 25.0 Eye Relief 19.6mm Close Focus Distance 5.0m Interpupillary Distance Adjustment 56-72mm Length 187mm Width 139mm Depth 62mm Weight 825g Waterproof Yes Price: £229.00 Quantity: