Minox matches high performance and light weight in two new ergonomically designed BD Series binoculars: the BD 8.5x42 and the BD 10x42. Both binoculars are compact and great for distance viewing, with aspherical lenses to optimize contrast and deliver sharper images from edge to edge; the intricate Minox objective-lens system features internal focusing and offers excellent viewing in low-light situations. Fewer and thinner eyepiece lenses reduce length and weight, and produce top optical performance and enhanced light transmission. The lenses feature a 42mm entrance pupil and have low-reflection M*Coating and a phase-correction layer on the silvered prisms. Adjustable rubber eyecups accommodate eyeglass wearers. A protective rubber armoring provides durability and both binoculars are watertight to 16'5" and dustproof.