
Photo by EMore98 (CC BY-SA 4.0), via Wikimedia Commons
Black Bay Chrono
The chronograph branch of the Black Bay: a 41mm steel case, two subdials (running seconds at 9, 45-minute counter at 3), and the MT5813 caliber developed from the Breitling B01 chronograph through the Tudor-Breitling movement-exchange. The line is the watch the trade points to when it explains the manufacture-tier output Tudor reached after the BB GMT.
