SilteD Binoculars 20X50 High-Powe Night Vision Large Eyepiece

Eyepiece Cover: Screw Jack-Up Goggles, Long-Horizon Facilitate People with . Degree Viewing Angle: 8.2 Degrees Ultra-Wide-Angle Design, Wide View.Prism: Bak4 Prism of High Refractive Index. Focus: the Central Focus Quickly and Smoothly.Diopter: Diopter Adjustment Control, Elimination of Binocular Parallax. Lens: Lead-Free Aspheric Lens and a Prism, a Multilayer Coating Technology Sophisticated Proprietary Eco Lenses Made Simply to Eliminate Image Distortion, in the Whole Field of View, Showing a Very Clear, Sharp, True Color, Flicker-Free Image. Performance: Durable, Even under the Most Adverse Conditions Have Reliable Optical Performance.