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  1. Royal Oak
  • Royal Oak Equation of time, Watch Reference 26603OR.OO.D092CR.01
  • Royal Oak Equation of time, Watch Reference 26603ST.OO.D002CR.01
Variations: Model 26603
  • Royal Oak Equation of time, Watch Reference 26603ST.OO.D002CR.01

    Equation of time

    Selfwinding equation of time watch with sunrise and sunset times and perpetual calendar with astronomic moon. Stainless steel case, silvered dial, black strap. Availability to be confirmed.

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      • Case Width 42.00 mm
      • Case Thickness 10.45 mm
      • Water Resistance 20 m


      Stainless steel case, glareproofed sapphire crystal and caseback, screw-locked crown
      Silver-toned dial with “Grande Tapisserie” pattern, white gold applied hour-markers and Royal Oak hands with luminescent coating
      Hand-stitched “large square scale” black alligator strap with stainless steel AP folding clasp
      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
      Direction of automatic winding
      Type of oscillating weight
      Support and weight segment in 21-carat gold
      Number of jewels
      Power reserve
      40 h
      Number of parts


      • 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
      • Oscillating weight can be custom decorated upon customer's request

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