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