Audemars Piguet Royal Oak Openworked Stainless steel Watch 15305ST.OO.1220ST.01

Audemars Piguet Royal Oak Openworked Stainless steel Watch 15305ST.OO.1220ST.01

Specifications

Case Width 39.00 mm
Case Thickness 9.40 mm
Water Resistance 50 m

Case – Stainless steel case, glareproofed sapphire crystal and caseback, screw-locked crown
Dial – Slate grey dial, white gold applied hour-markers and Royal Oak hands with luminescent coating
Bracelet – Stainless steel bracelet with AP folding clasp
Reference – 15305ST.OO.1220ST.01

Functions
Hours, minutes, centre seconds

Total diameter
11¾ mm

Type of balance
With Variable inertia blocks

Frequency of balance wheel
3,00 (=21’600 alternances/hour) Hz

Type of balance-spring stud-holder
Screwed mobile stud

Balance-spring type
Flat

Direction of automatic winding
Bidirectional

Type of oscillating weight
Monobloc in 22-carat gold

Number of jewels
38

Power reserve
60 h

Number of parts
239

specificities

Skeleton movement
Stop balance when setting time
Oscillating weight with ceramic ball bearings
Manual finishing on both bridges and mainplate