Some of Rolex’s most popular watch collections are timepieces developed specifically for certain sports or lifestyle activities. However, this mentality – having different watches for different activities – was actually something Rolex only started to embrace in the 1950s. On the contrary, when the Rolex Datejust was first invented in the mid-1940s, Rolex’s core goal was to make a reliable and accurate watch that could be worn all day, every day, in any situation its owner might encounter. 
So while many Rolex replica watches have certain features or functions that make them particularly suited to a certain sport or environment, the Rolex Datejust is simply a classic style watch that shows the time and date and nothing else. However, while the model may initially seem rather mundane compared to its sports watch siblings, it is the timeless and instantly recognizable beauty of the Rolex Datejust that has made it a true industry icon and the best-selling Rolex watch of all time.
Available in as many different variations as there are grains of sand on the beach, the color-changing Rolex Datejust has been with us for over 70 years. It has been the model that most people think of when they hear the name “Rolex”. Here are the variations of the Datejust in terms of size, material, bracelet, and bezel.
Neither as formal as a President or Cellini, nor as straightforward a tool as a Submariner or Daytona, the Rolex Datejust easily falls between these two areas – an ideal combination of style and substance, with enough versatility in size, metal, and finish to be the only watch you’ll ever realistically need. 
Thirteen years later, Caliber 2135 became the movement of choice for ladies’ and mid-size Rolex Datejust replica watches from 1983. 2135 provided a useful date function for the Datejust 31mm and 26mm watches.
With similar case sizes, the Lady-Datejust and mid-size Datejust models shared the same self-winding movement. The 1135 movement was introduced in 1957 and replaced by the 1166 movement in 1967. In 1970, Rolex began fitting the then-new Caliber 2035 to the two smaller Datejust models. 2015 saw the introduction of Rolex’s new caliber 2236 with an anti-magnetic Syloxi hairspring and an improved 55-hour power reserve.
Similar to all Rolex fake watch models, the Datejust has received a series of movement upgrades over the past few decades as Rolex continues to strive to refine and improve its iconic design.
