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Jaquet Droz - Grande Seconde Deadbeat

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At first sight you might not immediately realise what is new in the Jaquet Droz Grande Seconde Deadbeat because the dial layout looks quite familiar and similar to the dial of the Grande Seconde Quantième Ivory Enamel that we covered here.


If you explore it with more attention you will notice that the seconds hand is central and not off-centered as in the historic version. In fact, the independent or "deadbeat" seconds is the distinctive feature of the Grande Seconde Deadbeat, a Baselworld 2015 preview.

This new technique means that the direct-drive seconds hand no longer advances in a linear fashion, but rather makes a small jump every second, giving an extremely accurate indication of the exact time.

The ivory dial has been enamelled using the Grand Feu technique and features the typical retrograde date indication at 6 o'clock. The "numerus clausus" text between 9 and 11 o'clock remarks that the Grande Seconde Deadbeat is a limited edition of 88 individually numbered pieces. The red gold case has a diameter of 43 mm.

The need to combine deadbeat seconds with calendar, hour and minute functions has led to the creation of a totally new calibre for which a patent has been applied for. It is equipped with a silicon-made balance-spring which ensures exceptionally accurate timekeeping for its property to be unaffected by magnetic fields or changes in temperature and pressure.




Beating at 21,600 vph, this new self-winding movement features a red gold oscillating weight, visible through the sapphire crystal case back,  and offers a power reserve of 40 hours. jaquet-droz.com


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