When you need more magnification but still want a semi-compact set of glasses, the BX-5 Santiam HD 12x50's may be perfect for you. Made for epic adventures and harsh environments, the BX-5 Santiam HD binoculars dominate other optics in their class. We designed the generous eyebox for long glassing sessions with no eye-strain. The advanced prisms and Twilight Max HD Light Management System ramp up light transmission and redefine low-light performance, clarity, and resolution, allowing you to squeeze more time out of the day, and pick out detail others can't. Features: Advanced HD lens system BAK 4 prisms - delivers a perfectly round exit pupil with virtually no edge distortion and a crisp, clear image DiamondCoat 2 Diopter focus Ergonomic design Fully multi-coated lens system Sheds dirt and water for clear, crisp images with the Guard-ion lens coating Open bridge, roof prism design is extremely lightweight and ergonomic Extremely smooth focusing system for fine adjustments Twilight Max HD light management system Twist-up eyecups and generous eye relief for comfortable extended viewing Phase coated roof prisms significantly increase resolution for a sharp sight picture from edge-to-edge of the visual field Absolute waterproof and fogproof integrity means it's ready to perform in the field, in all conditions