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Magnification:20x-60x; OBJ.Lens DIA:80mm; Prism Type:BAK4; Field of view: 46M-29M/1000M; Exit Pupil: 4-1.30mm; Exit Relief: 18-14.5mm; Optical Coating: Full Multi Coated; Waterproof IPX7; Nitrogen Filled; Floating on the water