For the Rolex Day-Date watches, until the year of 1977, the Day-Date Ref.1803 finally ended its service. Rolex changed the model numbers of the Day-Date into five numbers, and the last number added to the model numbers was to distinguish the case qualitative, as the number 8 is yellow gold, the number 9 is the white gold and the number 6 is the platinum. During this period, the Rolex Day-date also had experienced two changes, one is changing the Aggreko watch glass into the sapphire crystal glass to provide better waterproof performance and increase the waterproof depth from 50 meters to 100 meters; the second one was that it had the stopwatch function in the year of 1972 to realize adjusting time more conveniently and accurately. Until 1988, along with the birth of the “king of the self winding movement” cal.3135, the Rolex Day-Date also has put on the Cal.3155 with the week display function on the basis of the cal.3135, and it is still used until today.

Compared with the Cal.1555, the accuracy of the Cal.3155 movement of the rolex replicas swiss made is higher, and it applies the double alloy balance spring, which is less affected by temperature change, Cal. 1555 is double blue steel balance spring. Calendar and week can be just switched directly, the week of the Cal. 1555 cannot be switched quickly, and only can adjust 24 hours a day, or turns back eight hours to adjust. Cal. 1555 is with unilateral fixed balance cock to match the old screw compensation balance wheel, but the balance wheel bridge Cal. 3135 is fixed by the screws on two sides, which is more stable and solid.

Here, I’d hope everyone who loves the Rolex Day-Date can be rich man, or at less have your own Rolex Day-Date watch, as you really deserve having the classic Day-Date watches.