To pick a set of antlers out of a low-light background, pick Leupold® BX-1® McKenzieTM Binoculars. Proprietary Twilight Light Management System reduces glare and boosts contrast and resolution to produce greater detail in low light. Fully multi-coated lenses ensure maximum brightness for clarity, contrast and color fidelity. Phase-coated BaK-4 roof prisms create a perfectly round exit pupil to eliminate edge distortion. 100% waterproof and fog proof to hold up to the elements and a rubber armor body to maintain grip. The large center focus dial adjusts easily even when you wear gloves.