Debuting in 2004, the Equation du Temps Marchante brought the complex running equation complication to the wrist for the first time through an innovative gear train and differential system. Caliber 3863 powers both the running equation hand and a plus/minus scale, integrated alongside a perpetual calendar and retrograde moon phase display. Reference 6638-3431-55B is a limited edition of 188 pieces, featuring a red gold case, grand feu enamel dial, and a custom-engraved rotor.
Shape
Round
Lug Distance
23.00 mm
Material
Red Gold
Glass
Dial Color
White
Sapphire
Thickness
11.50 mm
Diameter
42.00 mm
Water Resistance
30.00 m
