OttantaSei

  • 44mm case in 18k red gold, titanium, and platinum
  • Hand-wound movement
  • Flying tourbillon
  • Exhibition caseback
  • “Light” in two senses referencing both luminosity and weight.
  • Ten-day power reserve with a single barrel

Winding mechanism

The extreme miniaturization of the winding mechanism inspired the firm to file a second patent for the three-dimensional multiple meshing teeth, which drastically reduce clutter while optimizing the watch’s operation. A mechanical watch of this complexity would typically involve twice as many turns of the crown to wind; however, the exclusive winding system in the Ottantasei and its patented spherical differential halves this number.

Technical Specifications

  • Blue circular brushed dial in a 18K red gold case
  • Strap: rubber
  • Diameter: 44mm
  • Power reserve: 10 days
  • Caliber: 17BM03
  • Movement type: Hand-wound
  • Frequency: 18’000v/h
  • Water resistance: 30 meters
  • Warranty: 5 Years
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