Based on the in-house chronograph caliber 4401 released in 2019 in the Code 11.59 by Audemars Piguet collection, the caliber 4407 has been deeply re-engineered to improve its energy management in order to allow the addition of the split-seconds mechanism. In addition to this, a new oscillator has been developed which features a Breguet overcoil, whose sharply curved outer end ensures the concentric development of the balance spring for increased accuracy.

Caliber: 4407

Release Date: 2023

Country: Swiss made

Type: Automatic

Dimensions: 32mm/8.92 mm

Total Components: 638

Jewels: 73

Oscillating Frequency: 4Hz (28,800 VPH)

Power Reserve: 70 hours

Functions: hours, minutes, small seconds, large date, flyback chronograph, split-seconds chronograph, GMT 24-hours day/night.

Balance Wheel: Variable inertia, free-sprung

Rotor: skeletonized

Finishing: Geneva stripes, machine beveling, polishing, circular satin finishing, circular graining, perlage

Unique Features: unique oscillator, split-seconds flyback chronograph with mechanism visible on movement side, one-button 24-hour GMT

Audemars Piguet caliber 4407 dial side

Posted by:Staff