Bushnell Engage 10x42 ED BinocularsThe Bushnell Engage 10x42 ED Binoculars showcase some of Bushnell's finest glass, including ED Prime lenses and PC 3 phase corrected BaK 4 prisms. Their proprietary EXO Barrier coating keeps debris, water and oil from sticking to the lens surfaces, keeping your view bright and crystal clear and making the lenses much easier to clean. To protect the glass further, the binocular has a durably armored magnesium chassis that keeps it at a light weight of