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+====== Tudor MT5621 ======
+{{wst>image_cr|Tudor|MT5621}}
+**Cal. MT5621** is the first [[in-house]] movement from [[Tudor]], introduced in [[2015]].
+===== History =====
+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. These are based on Rolex technology, and include that company's [[silicon]] [[hairspring]] technology, full [[balance bridge]] and [[free-sprung]] [[Microstella]] [[balance wheel]].
+Cal. MT5621 was the first Manufacture Tudor movement and features a [[power reserve indicator]] at 9 00. Most other features are more common, including [[central seconds]], and a conventional [[date wheel]]. The specs of Cal. MT5621 are identical to the smaller [[Rolex 3255]] in the [[Rolex Day-Date 40]] introduced at [[Baselworld]] in [[2015]]. Cal MT5621 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.
+===== Applications =====
+Cal. MT5621 was used in the following models
+  * [[Tudor North Flag]] (2015-present)
+<WRAP ud ud_mov>
+**Manufacturer:**
+  * [[Tudor]]
+**Description:**
+  * [[Self-winding]] movement, bi-directional winding
+  * [[COSC]] [[chronometer]] certificate
+**Functions:**
+  * [[Central seconds]]
+  * [[Date wheel]]
+  * [[Power reserve indicator]]
+**Data:**
+  * D 33.8 mm, H 6.5 mm
+  * 28 [[jewels]]
+  * 28,800 A/h
+  * Power reserve 70 hours
+**Production period:**
+  * [[2015]]-Present
+</WRAP>
+{{tag>Movements Automatic_movements Tudor_calibres}}