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