Magnification: 10x - Effective Lens Diameter: 42mm - Exit Pupil Diameter: 4.2mm - Twilight Factors: 20.5 - FOV (1000 yds.): 330 ft - Subjective Viewing Angle: 60° - Close Focus: 5.25 ft - Diopter Adjustment Range: +4 dpt - Pupil Distance: 57.5mm - 76mm - Eye Relief: 16mm - Lens Type: HD-Type - PrismSystem: Schmidt-Pechan - Water Resistance: 100 mbar - Nitrogen Filling: Yes - Functional Temperature (F°): -14 / +171 - Height: 5.5 - Width: 4.7 - Weight: 25.4 oz - Finish: Black - TERRA Binoculars combine SCHOTT ED glass with ZEISS MC coating for pure bright and vivid images even in low light - Compact dimensions and light in weight the TERRA ED offers a delightful experience in the field - With focus to 5.25 feet you see amazing detail