TUDOR introduced its first chronograph in 1970. The TUDOR Heritage Black Bay Chrono Watch is arguably even more notable. The first watch from the company with an in-house chronograph movement, it combines the diving heritage of the Black Bay with the racing chops of a chrono. The 41mm steel case has a polished and satin finish, a fixed steel bezel with tachymetric scale, a black dial with two subdials, and a steel screw-down winding crown. It's finished with either a matching steel bracelet or leather strap, both of which include a navy-blue denim-style strap.