The first Rolex Day-Date references 6510 and 6511 were powered by the cal. 1055, which required a bulkier case to house the new day disc and primitive self-winding mechanism within the movement. As is the case with nearly every wristwatch that Rolex produces, the movement and case design were tirelessly perfected to offer a sleeker and more effortless hold on the wrist. This movement was eventually replaced with the cal. 1555 in the 180x series of Day-Date watches
The next significant change to the movement replica rolex explorer came in the 1970s with the addition of hacking seconds in the cal. 1556 and a Single Quickset function in its successor cal. 3055. Hacking seconds allows the wearer to stop the seconds hand while setting the time, enabling synchronization and increased precision. The Single Quickset allows the wearer to adjust the date of the month independently from the time, by simply rotating the winding crown.
The Quartz Crisis also hit around this time – an era that saw a significant shift in trends from mechanical movements towards quartz-powered watches. To remain on-trend, Rolex developed a collection of quartz movement watches, including the Day-Date series, which was powered by the in-house cal. 5055, then later the cal. 5355. The Rolex OysterQuartz series remained in production until the very early 2000s but ultimately failed to catch on with the public.
The 182xx series hit the market in the late 1980s, bringing with it the cal. 3155 and the now-standard Double Quickset function. With a Double Quickset, the wearer can correct both the date and day displays without twisting the crown full 24-hour replica rolex watches rotations. The cal. 3155 remained the Day-Date’s go-to movement for the next several decades.
The Rolex Day-Date II brought with it a larger 41mm case size and the cal. 3156 with a 48-hour power reserve. While the watch was certainly on-trend, it was eventually discontinued in favor of the current Day-Date 40 and the brand-new cal. 3255.
Today, the cal. 3255 powers both the Rolex Day-Date 40 and Day-Date 36. It boasts magnetic-resistant and anti-shock technology and it is heralded for its singularly precise reading. It also features a longer 70-hour power reserve and it is protected by a total of 14 patents.
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