Oris Big Crown Pointer Date 80th Anniversary Edition 01 754 7741 3167-07 5 20 58BRCASE Oris Big Crown, 40. 00 mm, 1. 575 inches, Bronze MATERIAL Multi piece bronze case, stainless steel case back SIZE 40. 00 mm, 1. 575 inches TOP GLASS Sapphire, domed on both sides, anti reflective coating inside CASE BACK Stainless steel, screwed, see through mineral glass OPERATING DEVICES Bronze screw in security crown WATER RESISTANCE 5 bar INTERHORN WIDTH 20 mm MOVEMENT Automatic winding pointer date developed by Oris NUMBER Oris 754, base SW