In 1970, TUDOR launched its first chronograph, the Oysterdate. This robust, functional watch offered a unique design, paving the way for 50 years of TUDOR chronographs. SERIES 7000 OR “HOMEPLATE” The first TUDOR chronograph was named the Oysterdate, and immediately became associated with mechanical sports watches. Powered by a robust mechanical Valjoux 7734 calibre with… 1970-2020, 50 Years of Tudor Chronographs