TSO Coral 10x25 Porro Binocular Black. Coral HD binoculars compact size make them the ideal optic for vacation and sporting events. High Definition lenses are protected by our rubber armor protective chassis coating to protect from bumps and drops. Specifications for TSO Coral 10x25mm Porro Prism Binocular: Manufacturer: TSO Color: Black Magnification: 10 x Objective Lens Diameter: 25 mm Prism System: Porro Prism Material: K9 Eye Relief: 10.5 mm Exit Pupil: 2.5 in Field of View Linear: 289 ft at 1000 yds Field of View Angle: 5.5 degrees Binoculars Focus System: Manually Adjustable Interpupillary Distance: 56 - 75 mm Close Focus: 13.1 ft Weight: 9.5 oz Fabric/Material: Rubber Width: 4.9 in Package Contents: TSO Coral 10x25 Porro Binocular TSO T114001: Coral 10x25 Porro Binocular Black