Extra-low Dispersion glass for optimum clarity Fully multi-coated optics to produce sharp images Focus knob with 1.2 turns - close focus from 6.6ft/2mHigh resolution phase corrected BAK-4 roof prisms Lightweight rubber coated mid-size top hinge chassis Stay-on lens covers for maximum lens protection Twist-up eye cups with position stops for eye relief Magnesium alloy body, with leatherette finish Featuring a waterproof twin hinge pocket sized binocular design Hawke World Wide Warranty Magnification 10x Objective, mm 42mm Field of View, ft. @ 100 yds. 304 Eye Relief, mm 13 Close Focus, ft. 6.6 Lens Coating Fully Multi-Coated Prism Type Roof BAK4, Silver Mirror Coating Interpapillary Distance, mm 53-73 Diopter System Right Eye Eyecups Twist-Up Material Magnesium alloy Waterproof, fog proof and Nitrogen purged Yes Dimensions (Hawk), in 5.6" x 4.9" Weight, oz. 23