A full size set of binos isn't always the solution. Enter our compact BX-4 Pro Guide HD binoculars. We decreased the size and gave you some weight savings, all while maintaining an elite level of performance. Built around our Twilight Max HD Light Management System, the BX-4 Pro Guide HD binoculars boast un-paralleled brightness, edge-to-edge clarity, and advanced glare management elements, helping you see more details in less light. Their ergonomic open-bridge design is comfortable for extended glassing sessions and delivers key weight savings for those long backcountry adventures. Features: BAK 4 prisms - delivers a perfectly round exit pupil with virtually no edge distortion and a crisp, clear image Ergonomic design High-definition, calcium-fluoride lenses ensure incredible clarity at all magnification levels Twilight Max HD light management system Twist-up eyecups and generous eye relief for comfortable extended viewing Absolute waterproof and fogproof integrity means it's ready to perform in the field, in all conditions Central focus dial