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Oct 10, 2020
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SPECIFICATIONS
Reference: m91210n-0001
Five year Guarantee
Five-year transferable guarantee with no registration or periodic maintenance checks required
Case
40 mm steel case with satin finish, open back with sapphire crystal
Movement
Manufacture Calibre MT5621 (COSC)
Self-winding mechanical movement with bidirectional rotor system
Power Reserve
Power reserve of approximately 70 hours
Winding Crown
Steel winding crown with TUDOR logo in relief
Waterproofness
Waterproof to 100 m (330 ft)
Bezel
Double bezel in steel and matt black ceramic
Dial
Black
Power reserve disc at 9 o’clock
Date at 3 o’clock
Crystal
Sapphire crystal
Bracelet
Steel bracelet with folding clasp and safety catch
THE TUDOR MANUFACTURE CALIBRE MT5621
The North Flag is fitted with a TUDOR Manufacture Calibre 5621, visible through a sapphire crystal in the case back and providing impressive autonomy. Its power reserve of approximately 70 hours means that its wearer can, for example, take off the watch on Friday evening and put it on again on Monday morning without having to wind it. Beating to a frequency of 28,800 beats/hour or 4 Hz, the movement is regulated by a variable inertia oscillator with silicon balance spring, held in place by a traversing bridge fixed at both sides to improve resistance to shocks and vibrations. The movement features a bidirectional self-winding system and is certified by the Swiss Official Chronometer Testing Institute (COSC).DATE DISPLAY AND POWER RESERVE
Powered by the TUDOR MT5621 movement, the North Flag features an instant date display visible through an aperture positioned at 3 o’clock and a power reserve indicator in the form of a disc at 9 o’clock.INTEGRATED STEEL BRACELET
The TUDOR North Flag is available with a solid, satin-finished steel bracelet that is integrated with its case, a design that requires particularly delicate modelling work for optimum ergonomics and ideal fluidity of the lines. The bracelet is fitted with a TUDOR folding clasp and safety catch.SATIN-FINISHED MIDDLE CASE
Angular, finely honed and entirely satin-finished for a matt effect, the middle case of the TUDOR North Flag creates a highly technical, “scientific” effect, softened by delicate refinements. The slight curvature of its upper face allows the light to capture it without a hard reflection point, while the angle between its sides and lower face is cut by a polished bevel, adding to the overall delicacy of the model.https://timeandtidewatches.com/north-flag-forgotten-tudor/