Rolex Datejust, self-winding chronometer wristwatch notable for becoming the first wristwatch with a date function, in 1945. The Datejust is offered with two classic Rolex bracelets: the jubilee and the oyster. It is a 36 mm watch in the men's size. On 2009, the Datejust II was released. It is a 41mm watch in the men's size on only the Oyster bracelet.
