Passion Fine Jewelry, Inc. Passion Fine Jewelry, Inc.

Grönefeld One Hertz Dune 18K RG watch

Product Description


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The amazing mechanism designed by Tim & Bart Grönefeld from The Netherlands. The movement has a secondary gear train for the Independent Jumping seconds, independent from the gear train for the hours and minutes. With two mainsprings, this caliber is unique in the production wrist watches.

This is the second model from the Grönefeld brothers, and their first manufacture caliber, finished to the highest degree by hand in their workshops. Unique too are the stainless steel bridges micro blasted center surfaces, with circle grained edges and hand beveling.

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