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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