Compact monocular design - ideal for travel; Extra-low Dispersion glass for optimum clarity; 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 chassis; Tripod thread; Stay-on lens covers for maximum lens protection; Twist-up eye cup with position stops for eye relief