Bushnell 243610 10 x 36 Excursion EX Binocular Wide Field of View w/ locking Focus Wheel Best Optical System in its Class (Fully Multi-Coated Lenses + PC-3 Phase Coated Prism) BaK-4 Prism, Twist-up eyecups 100% Waterproof/ Fogproof Close Focus & Long Eye Relief