Nikon 7577 Monarch 5 10 x 42 Waterproof/Fogproof Roof Prism Binoculars with Nikon Lens Pen & Essential Accessory Bundle All MONARCH 5 binoculars are now built with Nikon&#39;s premium ED (Extra-Low Dispersion) Glass for a sharper, clearer and more brilliant field of view. Almost an ounce lighter than its predecessor, the new MONARCH 5 is even easier to bring along on your next adventure. Fully Multicoated Eco-Glass Lenses provide a high light transmittance across the entire visible light spectrum. It is equipped with user-friendly features such as Turn-and-Slide Rubber Eyecups, a Smooth Central Focus Knob and Almost an ounce lighter than its predecessor, the new MONARCH 5 is even easier to bring along on your next adventure Fully Multicoated Eco-Glass Lenses provide a high light transmittance across the entire visible light spectrum It is equipped with user-friendly features such as Turn-and-Slide Rubber Eyecups, a Smooth Central Focus Knob and Flip Down Lens Caps Built for extreme use, the MONARCH 5 is waterproof, fog proof and has a rubber armored body for strengthened durability