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