Tudor Black Bay Chrono Manufacture Calibre MT5813 41mm steel case Turquoise dial

The Black Bay Chrono model seamlessly fuses TUDOR’s long history of crafting professional divers’ watches with a sports chronograph. This watch features contrasting sub-counters and a high-performance automatic Manufacture Calibre, with column-wheel construction and vertical clutch. Boasting a 70-hour power reserve and a silicon balance spring, the Manufacture MT5813 Chronograph Calibre is certified by the Official Swiss Chronometer Testing Institute (COSC), with its performance exceeding the standards set by this independent institute.