Bial 10x180x100 Times Binocular High Hd Lll Night Vision Prism Binoculars Material: specialized engineering materials, handgrip has high-class really glue, comfortable to touch. Eyepiece with eye protective soft glue;Inner objective lens add green plated film turn-back film, in order to solve the problem of insufficient light, make the scene more clear;A truly infinite smooth varying zoom, precision focusing system;Ultra clear the built-in wide-angle lens, allows you to see larger Angle Specification: 10-180 x100 (marked);Diameter of the objective: 50 mm; 10x magnification and 420-foot field of view at 1,000 yards Premium BaK-4 prisms and multi-coated optics offer crisp clear images with improved light transmission This product is suitable for bird watching, camping, watching the game and other activities.Especially the search target, first at hand with low range to the target, then by the high ratio observes, guarantee a trick.With it, whatever action target escapes your eyes.