Get a good look at that prospective trophy thats hidden deep in the twilight with Leupolds BX-4 Pro Guide 10x42 Binoculars. The calcium-fluoride HD lenses provide superb color rendition, lifelike clarity and razor-sharp resolution to easily pick out game within heavy foliage. Twilight Max HD lens coatings deliver enhanced colors, superior resolution and top-notch low-light performance all while reducing glare up to 50%. 16mm eye relief. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Full-Size.