Our field-tested 8-x-40 binoculars bring a century's worth of our experience to your field expeditions. These top-in-their-classÃ¿waterproof binoculars feature precision optics with full multi coatings toÃ¿enhance brightness contrast sharpness and colour accuracy. Porro BaK-4Ã¿prisms provideÃ¿edge-to-edgeÃ¿illumination making these ideal not only forÃ¿birders but also for low-light viewing and astronomy. They boast a rugged.Ã¿rubber-armored water-resistant body; comfortable long eye relief a 469-foot-wide view at 1.000 yards and the ability to focus on objects just 15 Ã¿feet away. Strap and case included.Technical Specifications.