Fujinon LB150 15x80mm MT Weatherproof High-Magnification Marine & Astronomy Porro Prism Binoculars Dark Grey 510mm x 225mm x 455mm. The 80mm objective lenses allow for a bright view when stargazing or glassing at dusk and dawn. Each eyepiece focuses individually and the -4 to +2 dioptric range lets you adjust the focus to suit your own visual acuity. Specifications for Fujinon LB150 15x80mm MT Weatherproof High-Magnification Marine & Astronomy Porro Prism Binoculars: Manufacturer: Fujinon Color: Dark Grey Magnification: 15 x Objective Lens Diameter: 80 mm Prism System: Porro Eye Relief: 15.7 mm Exit Pupil: 5.3 mm Field of View Linear: 70 m at 1000 m Field of View Angle: 4 degrees Optical Coating: Electron Beam Coating Binoculars Focus System: Individual Eyepiece Focus Interpupillary Distance: 58 - 72 mm Close Focus: 45 m Diopter Adjustment Range: -4 - 3 dpt Water Resistant Mark: 2 m Water Resistance Level: Water Resistant Length: 510 mm Weight: 7 kg Finish: EBC Multicoating Included Accessories: Case Magnification Type: Fixed Width: 225 mm Features of Fujinon LB150 15x80mm MT Weatherproof High-Magnification Marine & Astronomy Porro Prism Binoculars Military-specification unit meant for ship mounting Multiple layers of Fujinon's EBC antireflective coating on every optical surface 211' field of view and powerful 15x magnification 80mm objective lens and 5.3mm exit pupil for a bright image Individual focus and -4 to +2 dioptric adjustment range Angled eyecups shield viewer from stray light Adjustable interpupillary distance setting Package Contents: Fujinon LB150 15x80mm MT Weatherproof High-Magnification Marine & Astronomy Porro Prism Binoculars Objective Lens Cap Storage Case Limited Lifetime Warranty Fujinon 16330146: LB150 15x80mm MT Weatherproof High-Magnification Marine & Astronomy Porro Prism Binoculars Dark Grey 510mm x 225mm x 455mm