Leupold&&';;s BX-4 Pro Guide HD Gen2 Binoculars allow you glass longer during early predawn hours to well past dusk. Available in 8x42mm, 10x42mm, 10x50mm, and 12x50mm configurations, the BX-4 Pro Guide HD Gen2 comes standard with Leupold&&';;s exclusive Elite Optical System. The ensures excellent dawn-to-dusk light transmission for a bright image elite-level glare reduction in harsh light, and the resolution and clarity that diehard hunters and shooters demand. The lenses are protected with Guard-Ion lens coatings to easily shed dirt and condensation for a clear image in harsh conditions. To make extended glassing sessions more comfortable, the BX-4 Pro Guide HD Gen2 Binoculars offer a generous eye-box, and comes with a pair of form-fitting eyecups. Features of the BX-4 Pro Guide HD Gen2 Binoculars: Elite Optical System Hydrophobic Guard-Ion lens coating Generous eye-box Form-fitting eyecups Tripod ready