Tudor presents a technical model with a whole new aesthetic. Named Black Bay Pro, it has a 39-millimetre diameter, a fixed steel bezel and a Manufacture Calibre with built-in GMT function. Self-winding mechanical movement with bidirectional rotor system. Power reserve of approximately 70 hours. 24-hour graduated fixed bezel in satin-brushed steel. Waterproof to 200 m. Five year Guarantee. Five-year transferable guarantee with no registration or periodic maintenance checks required.