The Seamaster series is clearly the sportiest watch, but it is made in the classic spirit of diving models. You can buy watches from this series up to this size of 45.5 mm, which is already a nice piece of material. The watch is often characterized by a chronograph complication or GMT function as a second time zone. The bezel and dial are made of ceramic, just like the Bond watches. It is a durable and almost scratch-resistant material with a glossy finish. Water resistance is always 600 meters and of course there is a helium valve, screw-down crown, unidirectional rotating bezel and luminescence.
