On the water, a 7x magnification is almost standard: at this magnification, the binoculars are easy to keep stable. The depth of field of this model is big, making for reduced need in focusing. The twilight factor of this binocular model is sufficient for daylight and extends somewhat into evening and morning twilight. - Waterproof - BaK-4 prisms - Magnification factor: 7x - External lens size: 50 mm - Integrated compass: see the compass direction in the viewing direction within the binocular's field of view - Field of view 7.1º - Field of view at 1000 meters: 124 m - Apparent field of view: 50º - Eye relief: 24 mm - Twilight factor 19 - Tripod adapter - Pupil size: 7.1 mm - Closest focusing distance: 7 m - Interpupillary distance 54 - 73 cm - FMC coating - Porro prism design - Includes bag and strap - 10-year warranty