Fujinon Polaris FMTR-SX2 7x50mm High-Resolution Porro Prism Binoculars with Field Flattening Lenses Black 198mm x 218mm x 78.5mm. FUJINON POLARIS series binoculars offer superb optical performance and value. The FUJINON POLARIS series binoculars deploy FUJINON'S unique EBC coating allowing 95percent light transmission. With our field flattener lens we offer edge-to-edge sharpness free of any discernible astigmatism or distortion. Specifications for Fujinon Polaris FMTR-SX2 7x50mm High-Resolution Porro Prism Binoculars with Field Flattening Lenses: Manufacturer: Fujinon Color: Black Magnification: 7 x Objective Lens Diameter: 50 mm Prism System: Porro Eye Relief: 23 mm Exit Pupil: 7.1 mm Field of View Linear: 131 m at 1000 m Optical Coating: Electron Beam Coating Binoculars Focus System: Individual Eyepiece Focus Twilight Factor: 51 Interpupillary Distance: 56 - 74 mm Close Focus: 9.8 m Water Resistance Level: Waterproof Length: 198 mm Weight: 1.46 kg Finish: EBC Multicoating Magnification Type: Fixed Width: 218 mm Features of Fujinon Polaris FMTR-SX2 7x50mm High-Resolution Porro Prism Binoculars with Field Flattening Lenses Nitrogen-purged waterproof and fogproof lenses Up to 13 Fujinon EBC multi-coatings on all surfaces 56 to 74mm interpupillary adjustment range Protective rubber armoring Accepts optional 1.7in eyepiece filters including UV/haze polarizing nebula and solar filters FUJINONS unique EBC coating allows 95percent of light to pass through the binocular great for low-light performance. Robust body with airtight waterproof structure enabling use in harsh conditions from -20 to +50 Long eye relief design with a maximum length of 23mm. Eye relief refers to the distance between ones eyes and the eyepiece that still allows one to view the entire field ofvision. Long Eye Relief binoculars allowone to see right up to the edge of the field of vision even while wearing glasses with this distance at over 15 mm. Package Contents: Fujinon Polaris FMTR-SX2 7x50mm Binocular Objective Lens Covers Eyepiece Rainguard Soft Case Neck Strap Fujinon 16330574: Polaris FMTR-SX2 7x50mm High-Resolution Porro Prism Binoculars with Field Flattening Lenses Black 198mm x 218mm x 78.5mm