Tudor, North Flag, Steel
The North Flag is fitted with a TUDOR Manufacture movement, 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).
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24 Month Guarantee
All our pre-owned watches are fully inspected and serviced, where required, by highly trained watchmakers. Your watch is warranted by Prestons for a period of twenty-four months from the date of purchase and can be taken to any of our three showrooms, where our knowledgeable and experienced staff will be able to advise you on the servicing requirements of your wristwatch.