Offering just-right field of view and magnification in a compact package, the Leupold BX-4 Pro Guide HD 10x42mm Roof Binoculars are the best-seller of the BX-4 series. The BX-4 Pro Guide HD 10x42mm features an oversized eyepiece, removable twist-up eyecups, and plenty of eye relief, so you can enjoy hours of observation comfortably. Simply turn the oversized central focusing wheel to zoom and fine-tune images. Thanks to phase coated roof prisms, you can rely on edge-to-edge clarity and sharpness on your hunt.