Audemars Piguet Oak Perpetual Calendar Stainless Steel Watch 25820ST.OO.0944ST.03
Specifications
Case Width 39.00 mm
Case Thickness 9.30 mm
Water Resistance 20 m
Case
Stainless steel case, sapphire crystal and caseback
Dial
Silver-toned dial with “Grande Tapisserie” pattern, white gold applied hour-markers and Royal Oak hands with luminescent coating
Bracelet
Stainless steel bracelet with AP folding clasp
Reference -25820ST.OO.0944ST.03
Functions
Perpetual calendar with day, date, moon phases, months, leap years, hours, minutes
Movement thickness with module
4.00 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
38
Power reserve
40 h
Number of parts
343
specificities
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
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