The Barska(R) Blackhawk 10x40 Monocular is waterproof and fogproof with roof prisms added making for a more visible sight picture. Its large focus knob makes adjustments easy without having to lower from line of sight. An included wrist strap, shock absorbing armor, and carrying case provide extra security when trekking through even the roughest terrain with this Barska monocular. FEATURES: 10x40 monocular Ideal for any outdoor activity Shock-absorbing rubber armor Non-slip texture Multi-coated optics BK-7 Roof prisms Large center focus knob Waterproof Fogproof Includes carrying case, wrist strap and lens cloth Color: Black, green lenses Magnification: 10x Objective Lens: 40mm Exit Pupil: 4mm Eye Relief: 17.5mm Focusing System: Eyepiece Field of View (at 1000 yds.): 344' Close Focus: 13.12' Weight: 4.8 oz. Model: AA12132