DateJust 36 Launched in 1945, the Datejust was the first self-winding waterproof chronometer wristwatch with a window displaying the date at 3 o'clock on the dial. This unique combination was further enhanced in 1953 with the magnifying effect of the Cyclops lens on the display.Entry-level Rolex Datejust watches from the current collection are full stainless steel models fitted with domed steel bezels.