Ref. #25829ST.OO.0944ST.01

Royal Oak Openworked Perpetual Calendar

Selfwinding perpetual calendar watch indicating the day, date, moon phases, month and leap years. Stainless steel case, transparent dial, stainless steel bracelet.

Case

Stainless steel case, sapphire crystal and caseback

Case Width
39 MM
Case Thickness
9.3 MM
Water Resistance
20 M
Dial

Sapphire dial with white indicators, blackened gold hands

Bracelet

Stainless steel bracelet with AP folding clasp

mechanism

Powered by the natural movements of your wrist.

Selfwinding

complications

Complications

Royal Oak Openworked Perpetual Calendar

Specifications

Watch

Ref #25829ST.OO.0944ST.01

Case

Stainless steel case, sapphire crystal and caseback

Case Width

39 mm

Water Resistance

20 m

Case Thickness

9.3 mm

Dial

Sapphire dial with white indicators, blackened gold hands

Bracelet

Stainless steel bracelet with AP folding clasp

Watch Specifications
Case

Stainless steel case, sapphire crystal and caseback

Case Width

39 mm

Case Thickness

9.3 mm

Dial

Sapphire dial with white indicators, blackened gold hands

Bracelet

Stainless steel bracelet with AP folding clasp

Water Resistance

20 m

Calibre

Calibre 2120 / 2802 Manufacture

Total diameter

12½ mm

Frequency of balance wheel

2,75 Hz (19'800 alternances/hour)

Type of oscillating weight

Support and weight segment in 21-carat gold

Number of jewels

38

Calibre

Calibre 2120 / 2802 Manufacture

Type of balance-spring stud-holder

Mobile stud

Power reserve

40 h

Balance-spring type

With Variable inertia blocks

Direction of automatic winding

Bidirectional

Number of parts

343

Functions

Perpetual calendar with day, date, moon phases, months, leap years, hours, minutes

Calibre 2120 / 2802 Manufacture
Calibre 2120 / 2802 Manufacture, front

Front

Calibre 2120 / 2802 Manufacture, back

Back

Calibre

Calibre 2120 / 2802 Manufacture

Total diameter

12½ mm

Balance-spring type

With Variable inertia blocks

Type of balance-spring stud-holder

Mobile stud

Frequency of balance wheel

2,75 Hz Hz

Type of balance-spring stud-holder

Mobile stud

Direction of automatic winding

Bidirectional

Type of oscillating weight

Support and weight segment in 21-carat gold

Power reserve

40 h

Number of parts

343

Number of jewels

38

Functions

Perpetual calendar with day, date, moon phases, months, leap years, hours, minutes

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