Sporty lines, hybrid steel-ceramic components and a movement manufactured by TUDOR. The North Flag embodies the spirit of the watch that inspired it, a model worn by the British North Greenland Expedition in 1952.
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).
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.
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.