National Geographic Waterproof Binoculars 10x42. National Geographic binoculars come loaded with features and accessories. Most National Geographic binoculars come with a travel case cleaning cloth and neck strap. Specifications for National Geographic 10x42 Waterproof Binoculars: Manufacturer: National Geographic Color: Black Magnification: 10 x Objective Lens Diameter: 42 mm Binoculars Focus System: Center Focus Twilight Factor: 20.49 Package Type: Box Included Accessories: Lens Covers Case Strap Magnification Type: Fixed Package Contents: National Geographic 10x42 Waterproof Binoculars National Geographic 80-11042: Waterproof Binoculars 10x42