Magnification:20x-60x;                                OBJ.Lens DIA:70mm;                            rismType:BAK4;                                           Field of view: 2.1-1.08;                         Exit Pupil: 3.2-1.10mm;                        Exit Relief: 17-13.5mm;                          Optical Coating: Full Multi Coated; Waterproof IPX7; Nitrogen filled               Floating on the water