EW Rolex Day Date 40 1 Sapphire mirror, calendar 2.5x magnifying glass, the effect is the same as the original. 2 Oyster case structure, one-piece middle case, screw-in bottom cover and winding crown. 3 Structure, size and thickness are the same as the original, diameter 40 mm, and the thickness is 12 mm. 4 is equipped with 2836 automatic winding movement, which can quickly adjust the instantaneous day and day calendar, and achieve the same time adjustment, thickness and structure as the original version.