Ultra-modern top hinge design Fully multi-coated optics to produce sharp images Focus knob with 2 turns close focus from 6.6ft/2m High resolution phase corrected BAK-4 roof prisms Lightweight and durable rubber coated mid-size chassis Stay-on lens covers for maximum lens protection Twist-up eye cups with position stops for eye relief Waterproof, fog proof and Nitrogen purged. Available in a range of Power and Objective Diameter options.