Cal. MT5641 is an in-house big date movement from Tudor, introduced in 2018.
Cal. MT5641 features a big date window at 12:00 and small seconds at 6:00. Cal MT5641 is finished in a simple “industrial” motif rather than with elaborate anglage or finishing. This movement features modern technology, including bi-directional winding, hacking seconds, instantaneous date change with crown-based quickset, and a variable-inertia balance with micro-adjustment by screw and silicon balance spring.
Tudor MT56 Family Overview
Tudor traditionally used movements from major manufacturers, chiefly ETA in modern times, as a differentiator from parent company Rolex. Beginning in 2015, the company began producing a line of “Manufacture Tudor” movements for certain models, beginning with Cal. MT5621. These are based on Rolex technology, and include that company’s silicon hairspring technology, full balance bridge and free-sprung Microstella balance wheel.
In 2016, Tudor founded a new movement producer in Geneva known as Kenissi managed by Eric Yvon Pirson (head of Tudor), Jean-Paul Girardin (formerly of Breitling), and Philippe Jacques Dalloz. Two years later, the company constructed a new factory in Le Locle on land owned by Rolex. Chanel invested in Kenissi in 2019, taking a 20% stake in the company. As of 2020, Kenissi produces movements for Tudor, Chanel, Breitling, and Norqain.
| 31.8 mm | 33.8 mm | |
|---|---|---|
| No Date | MT5602 | MT5601 |
| Date | MT5612 Breitling B20 | |
| Power Reserve, Date | MT5621 | |
| Big Date | MT5641 | |
| GMT Hand | MT5652 Norqain NN20/2 |
Note that Tudor also produces a smaller movement, Cal. MT5402. Although it shares many characteristics with this family of movements, it is different in many details and is considered unrelated.
