Royal Oak Equation of Time

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A disruptive and downright revolutionary timepiece, the Royal Oak is immediately recognizable thanks to its state-of-the-art engineered strongbox case, octagonal bezel secured by eight hexagonal screws, visible water resistance gaskets, dials adorned with exclusive engine-turned “Grande Tapisserie” motif.Selfwinding equation of time watch with sunrise and sunset times and perpetual calendar with astronomic moon. Stainless steel case, silvered dial, black strap.

Functions: Sunrise and sunset times, equation of time, perpetual calendar, astronomical moon, hours, minutes

Movement thickness with module: 5.00 mm

Total diameter: 12½ mm

Type of balance: With Variable inertia blocks

Frequency of balance wheel: 2,75 (=19’800 alternances/hour) Hz

Type of balance-spring stud-holder: Mobile stud

Balance-spring type: Flat

Direction of automatic winding: Bidirectional

Type of oscillating weight: Support and weight segment in 21-carat gold

Number of jewels: 41

Power reserve: 40 h

Number of parts: 425


  • Extra-thin movement
  • Suspended barrel
  • Shake of the oscillating weight garanteed thanks to annular ring running on four jewels
  • Manual finishing of the bridges (polished bevels, satinbrushed edges, Perlage on the recesses)
  • Hand crafted decorative engravings on oscillating weight componants
  • Moonphase made with Physical Vapor Deposited metal onto sapphire
  • Sunrise & Sunset times can be changed upon customer’s request
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