Description Featuring a high 10x magnification and a Bak-4 prism system the highest quality prism system on the market the FirefieldA(R) 10x42 Binocular delivers brilliant light, pure visuals and vivid landscapes. Nitrogen-filled and water resistant, this binocular is built for reliability; ensuring users get the most out of every use in the field. The exterior is coated with a rubberized armor for a solid grip and protection against minor impact. Included in Package Carrying Case Neck Strap Lens Covers Lens Cloth Product Downloads Product Manual Features Fully Multi-Coated Lenses Ergonomic Design Lightweight Twist - Up Eyecup EXPORT CONTROL NOTICE: This product is controlled for export and in-country transfer under the Export Administration Regulations (EAR). division contrary to U.S. law prohibited. Specifications Magnification & Objective Diameter 10x42 mm Type of Prism (type) Bak-7 Prism Coating, (yes/no) yes Lens Coating Fully multi-coated CL/FC/BMC/FBMC Focus System, Cent/Ind/Fix Central Focusing Lens, Eye/Obj/Int Internal Diameter, Exit Pupil 4.2 mm Eye Relief 14 mm Field of View 5.8 angle Field of View 305 ft/1,000yds Field of View 102 m/1,000m Distance, Minimum Focusing Distance 5/16.4 ft/m Relative Brightness 17.64 Twilight Index 20.5 Resolution 7.5&';&'; Diopter System, location eyepiece Range, Diopter -3/+3 Distance, Interpupillary, in/mm 54-72 Nitrogen Purged no Fog Proof no IP Rating (waterproof) IPX4 (weatherproof) Eyecup system twist up Operating Temperature 32 to 120 F Dimensions, in/mm 5.9in (152mm)/ 6in (154mm) /2in (51mm) Weight, oz 20.5 oz