|Winding:||Automatic, Bi-Directional Automatic Winding, Central Rotor Automatic Winding|
|Diameter:||31.8 mm (14 ligne)|
|Tudor MT5612||Complications:||Date, Hacking Seconds, Instant Date Change, Quick Date Correction|
|Hands:||Central Hour Hand, Central Minute Hand, Central Seconds Hand, Date Window at 3:00|
|Distinguishing Technical Characteristics|
|Production: 2015 – Current|
Cal. MT5612 is an in-house movement from Tudor, introduced in 2015.
Cal. MT5612 was introduced in 2015 shortly after the first Manufacture Tudor movement, Cal. MT5621. It is quite similar, though without the power reserve indicator. It is a mainstream automatic movement, including common features like central seconds and a conventional date wheel. Being a modern movement, it also has updated 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.
Kenissi produces variants of this movement for other makers:
- Breitling Cal. B20
- Norqain NN20/1
Tudor also produces a “left-hand drive” version. Known as Cal. MT5612-LHD, it has a different date wheel, allowing the crown to be placed on the left side of the case.
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|
|Power Reserve, Date||MT5621|
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.