10x binos are the sweet spot. Enough field of view for tight areas while providing enough magnification for wide-open spaces. Built for epic adventures in harsh environments, the 10x42mm BX-5 Santiam HD binoculars dominate other optics in their class. Their generous eyebox is designed for long glassing sessions with no eye-strain. The open-bridge design is comfortable and easy to carry, while the advanced prisms and Twilight Max HD Light Management System ramp up light transmission and redefine low-light performance, helping you see more in less light. And, of course, their glare management, clarity, and resolution are second to none. Features: Advanced HD lens system BAK 4 prisms - delivers a perfectly round exit pupil with virtually no edge distortion and a crisp, clear image Central focus dial 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 Phase coated roof prisms significantly increase resolution for a sharp sight picture from edge-to-edge of the visual field Extremely smooth focusing system for fine adjustments Twilight Max HD light management system Twist-up eyecups and generous eye relief for comfortable extended viewing Open bridge, roof prism design is extremely lightweight and ergonomic Absolute waterproof and fogproof integrity means it's ready to perform in the field, in all conditions