Stealth Vision 10X42 Roof Prism Binoculars Black. It comes with the exclusive roof prism with a total reflective ocular surface mirror a technology used in surgical microscopes and is the only such model on the market. The Stealth Vision 10 X 42 thanks to a lightweight rugged aluminum body. Meanwhile the body is nitrogen-purged for 100percent waterproof and fog proof performance. Specifications for Stealth Vision 10X42mm Roof Prism Roof Binoculars: Manufacturer: Stealth Vision Color: Black Magnification: 10 x Objective Lens Diameter: 42 mm Prism System: Roof Exit Pupil: 0.16 in Field of View Angle: 6.33 degrees Optical Coating: Fully Multi-Coated Binoculars Focus System: Center Weather Resistance: Yes Weight: 25.6 oz Condition: New Last Chance: Yes Features of Stealth Vision 10X42 Roof Prism Binoculars 100percent lens clarity High Resolution Viewing Package Contents: Stealth Vision 10X42 Roof Prism Binoculars Bino Case Strap Lens Covers Stealth Vision SV-B42: 10X42 Roof Prism Binoculars Black