The Audemars Piguet Calibre 4400, the New In-House, Integrated Chronograph

The dispatch of the Code 11.59 collection is an essential second for Audemars Piguet. There has been no item dispatch of this greatness in the course of recent years for the brand. In this regard, the Code collection introduction was the ideal chance to introduce a since quite a while ago foreseen improvement that was reported a couple of years prior: the Audemars Piguet Caliber 4400, an in-house, integrated chronograph development – in no way, shape or form a little accomplishment since chronographs are incredibly hard to develop.

Long anticipated, finally here!

Until now, Audemars Piguet has produced a couple of top of the line chronographs in-house in the Le Locle APRP fabricate. Nonetheless, the brand depended generally on rethought chronograph developments – either integrated with the Piguet-based FP1185, or secluded with Dubois-Depraz modules on top of the in-house 3120 Caliber. Finally, the hotly anticipated Audemars Piguet in-house, integrated chronograph is currently here!

The Audemars Piguet Caliber 4400 chronograph is a very good quality, present day chronograph that has been five years in the making. Its development focusses on execution and productivity, and it incorporates a few interesting specialized specificities. The advancement began only a couple a long time after the appointment of François-Henry Bennahmias as CEO of the brand. In 2013, Bennahmias gathered his item and creation groups, in a real sense locking them in a meeting room and stating, “nobody leaves the room until we have conceded to the key choices and established the framework for the improvement of a chronograph movement“.

Following this order, Audemars Piguet created not one but rather two developments, both 14”’ in breadth and part of the equivalent family:

  • The AP 4300, a programmed base type – utilized in its AP 4302 variation in the Code collection
  • The AP 4400, a programmed, integrated flyback chronograph – utilized in its AP 4401 variation in the Code collection

Naturally, the two developments share a ton practically speaking and offer a few components. They use a similar barrel, similar controller and common parts for the keyless works or wheel train. The look and feel know about that of the past Audemars Piguet developments, specifically with the plan of the bridges.

Chronometric accuracy was a critical factor in the advancement of these two types. For improved solidness, Audemars Piguet has settled on a cross-over equilibrium connect rather than an equilibrium cockerel. On each side, there is a screw to change the equilibrium end shake. The oscillator works at 28,800 vibrations each hour. The enormous equilibrium wheel has an inertia of 12.5 mg/cmto give ideal solidness. It highlights 3 damages and 6 change loads. The enormous barrel guarantees a sound 70-hour power save. Winding is bi-directional gratitude to two reversers with metal rollers – a comparable framework was at that point utilized by Audemars Piguet for the AP4101 Calibre.

If the crown/stem activity is conventional (Position 1 for manual winding, P2 for brisk date setting set, P3 for time setting), the keyless works integrate a shrewd protected arrangement. An oscillating pinion drives the choice of the capacity. At the point when the crown is pulled, a wheel (that becomes inclined!) draws in with the date amendment wheel or the time remedy wheel. This engineering keeps away from any kickback when pushing the crown back in.

The Caliber 4400

The Chronograph Caliber 4400 is a top of the line, present day development with an attention on execution and proficiency. This enormous development (32mm) is an integrated development with a segment haggle clutch.

Start-Stop-Reset – One of the main things to grab your attention on the Caliber 4400 are the three twin sledges and mallet springs. The sledges are liable for resetting the hands. At the point when the brakes are lifted, the sledges fall on heart-formed cams rotating these until the mallets come to lay on the two shoulders of the heart and immobilize it.

The three mallet springs are practically indistinguishable and situated one close to the other. Not exclusively is the capacity smooth and complete however it is truly cool to see these in activity one close to the other, which is brilliantly featured by the engineering of the movement.

Flyback chronograph – The AP 4400 is a flyback chronograph, which implies it tends to be gotten back to nothing and restarted instantly with a single press of the catch. This capacity permits quick retiming without the requirement for pressing pushers multiple times in progression to stop, reset and start the chronograph. Be that as it may, this implies additional complexity as the reset should be worked without breaking any part, and the sledges then should be separated to restart the chronograph.

Decoration – Finishings on the Caliber 4400 include straight and roundabout satin brushing, Geneva stripes and perlage – on the two sides of the scaffolds, even in the shrouded zones. The scaffolds highlight huge chamfers, consummately precious stone cleaned. Engravings are gold-conditioned. The 22K gold rotor is openworked with the AP logo, which offers a brilliant perspective on the mechanism.

As with all Audemars Piguet watches, the watches furnished with the Caliber 4400 come with a 5-year guarantee. For more information, if it’s not too much trouble, visit .

Audemars Piguet Caliber 4400 – Specs

  • Architecture: Integrated, programmed, section haggle grasp, flyback chronograph
  • Dimensions: 32mm x 6.8mm
  • Frequency: 28,800 vibrations for every hour
  • Balance wheel: variable inertia, 6 loads, 12.5 mg/cm2
  • Power hold: minimum 70 hours
  • Winding: programmed, bi-directional
  • Coupling: vertical clutch
  • Jewels: 40
  • Functions: hours, minutes, seconds, date, flyback chronograph