Get powerful magnification in a lightweight high-performance package. The 12x50mm BX®-4 Pro Guide™ HD binos make sure you can spot a trophy at almost any distance. Built around our Twilight Max HD Light Management System these binoculars boast un-paralleled brightness edge-to-edge clarity and advanced glare management technology; helping you see a clearer image in the harshest lightning conditions. Their ergonomic open-bridge design is comfortable for extended glassing sessions and delivers key weight savings for those long backcountry adventures. - 100% Waterproof and Fogproof - BAK 4 Prisms - Ergonomic Design - Fully Multi-coated Lens System - High Definition - Open Bridge Roof Prism Design - Phase Coated - Twilight Max HD Light Management System - Twist Up Eyecups - Interpupillary Distance Range: 58-74 - Weight (oz): 28.5 - Linear FOV (ft/1000 yd) - High: 263 - Length (in): 6.6 - Eye Relief (mm) - High: 16 - Angular FOV (degrees) - High: 5.0 - Exit Pupil (mm) - High: 3.9 - Close Focus Distance (ft): 10