Opticron Oregon 4 PC Oasis 10x42mm Roof Prism Binocular Black Full Size. Specifications for Opticron Oregon 4 PC Oasis 10x42mm Roof Prism Binocular: Manufacturer: Opticron Color: Black Magnification: 10 x Objective Lens Diameter: 42 mm Prism System: Roof Prism Material: BAK4 Image Stabilizer: No Eye Relief: 18 mm Exit Pupil: 4 mm Field of View Linear: 105 m at 1000 m Field of View Angle: 6 degrees Optical Coating: Fully Multi-Coated Binoculars Focus System: Center Focus Twilight Factor: 20.5 Interpupillary Distance: 2.2 - 2.9 in Close Focus: 2.3 m Diopter Adjustment Range: 6 dpt Water Resistance Level: Waterproof Length: 147 mm Weight: 23.9 oz Fabric/Material: Polycarbonate Aluminum Alloy Package Type: Box Magnification Type: Fixed Width: 125 mm Depth/Thickness: 52 mm Features of Opticron Oregon 4 PC Oasis 10x42mm Binocular Roof prism design with sophisticated twin relief rubber covering Nitrogen gas filled waterproof construction BAK 4 fully multi-coated optical system (all air/glass surfaces) Phase corrected prism coating with Oasis high light transmission coating Twist type retractable eyecups Wide wheel focusing Full field of view wearing glasses Tripod adapter socket Package Contents: Opticron Oregon 4 PC Oasis 10x42mm Binocular Case Neckstrap Cleaning cloth Lens covers Rainguard Opticron 30767: Oregon 4 PC Oasis 10x42mm Roof Prism Binocular Black Full Size