The Oyster Perpetual Datejust is the epitome of the classic Rolex watch. Launched in 1945, the Rolex Datejust was the first automatic, waterproof chronograph wristwatch to display the date in a window at the 3 o'clock position of the dial. This is where the name "Datejust" comes from. With its timeless appearance, its features and its rich history, the Datejust is an icon in the watch industry and one of the most recognizable watches of the Rolex brand.
No other watch has played a greater role in Rolex's enduring success than the humble and beloved Datejust. For nearly three-quarters of a century, the Datejust has served as the fundamental foundation of the Rolex lineup. For many people, the Datejust is the only watch they will ever need.
The Datejust was introduced in 1945 in honor of Rolex's 40th anniversary. This makes it one of the oldest collections of Rolex still in production. While a date display has become completely standard on most modern timepieces, the Rolex Datejust was the world's first self-winding wristwatch. The date window changes midnight automatically, and while this functionality may now seem a bit mundane, it was the Datejust that set the standard for how a date display on a wristwatch should work.
In addition, the Datejust was equipped with a new style bracelet on its debut, namely the Jubilee bracelet that was specially designed for this model.