Many of the classic sports watches have appeared

Rolex's "Oyster" watch because of its excellent waterproof performance achieved a great success, but also because the production is relatively easy, so many watch brands have started to follow the example of the design, not only the screw-on crown and screw-on bottom cover then became a watch standard configuration, but also circular watchcase was popular. So that until 1969, Tag Heuer produced the first square watch with water-proof function .But by that time, plastic technology is developed very well, adding waterproof plastic ring in the watchcase is not a mission impossible, so the circular or square becomes less important for waterproof technology.

Also because of the rise of waterproof function, sport watch has become the trend at that time. Coupled with the economic recovery, the popularity of sports and automatic pendulum coming out, in 1950's or 1960's, many factories are introduced watches taking both the timing function and waterproof function. Many modern classic watches also have appeared. For example, Rolex in the 1950's produced the Submariner, in 1960's produced Daytone. BREITLING in 1952 was launched Navitimer, OMEGA brought out Moonwatch in 1957. At the same time, at the time a number of brands are competing to claim that it invented automatic chronograph movement and bid farewell to chronograph movement without the self-winding. Today, many watch lovers think the watch in 1950's or 1960's still can't be transcended. And then those watches have also been regarded as a classic being preserved by watch brands until the present day.