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. Comes with Pro Gear accessories - GO Afield shoulder strap binocular case lens covers and lens cloth. - 100% Waterproof and Fogproof - Ergonomic Design - Smooth Focusing - Twilight Max HD Light Management System - Twist Up Eyecups - Guard-Ion Rain Shedding Coating - Open Bridge Roof Prism Design - Weight (oz): 23.6 - Twilight Factor: 18.3 - Length (mm): 150 - Angular FOV (degrees) - Low: 7.2 - Eye Relief (mm) - Low: 18.5 - Weight (g): 670 - Exit Pupil (mm) - Low: 5.0 - Interpupillary Distance (mm) - Low: 58 - Interpupillary Distance (mm) - High: 78 - Close Focus Distance (ft): 8 - Close Focus Distance (m): 2.4