These binoculars feature 12-power multicoated lenses and 50mm objectives fabricated with Nikon®’s exclusive lead and arsenic free Eco-Glass™. The BaK4 Porro prism systems deliver a high-quality image under a multitude of lighting conditions, making these binoculars effective from dawn ‘til dusk. Aspherical eyepiece lenses aid in delivering a flat field of view, while lens multi-coating enhances image brightness. The environmentally friendly Nikon Eco-Glass lenses deliver astonishing clarity and precision in a lighter-weight, lead- and arsenic-free glass composition. Turn-and-slide rubber eyecups facilitate easy positioning of eyes at the correct eye-point and allows for comfortable viewing during extended periods of use. Smooth central focus knob allows for quick viewing in addition to the ACULON’s comfortable and ergonomic design. Dimensions: 7" L x 7.8" W. Weight: 32.1 oz.