The 25554ST.O.0344ST.01 model marked the debut of the Royal Oak line featuring a perpetual calendar complication.
Movement Type
Automatic
Caliber
AP 2120 / 2800Jewels
38
Reserve
40
Frequency
21600
Hands
No Seconds
Shape
Other
Material
Stainless Steel
Glass
Sapphire
Diameter
39.00 mm
Dial Color
Silver