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Audemars Piguet Caliber AP 2610

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Manufacturer Audemars Piguet
Caliber Number 2610, AP 2610, AP2610
Type Quartz
Diameter 16.5mm
Height
1.9mm thick
Jewels
8
Battery Number 321 or 364 (depends on watch model)
Battery Life
24 months
Frequency
32,768 Hz
Stepping Motor 1 impulse per 5 seconds
Stem
Split stem (needs confirmed)
Functions Hours, minutes, date
Rapid Date?
Yes
Country of Manufacture Switzerland
Known Models
Ladies Royal Oak (ref: 66319SC, 66344SC, 66466SC, etc)

This is the Audemars Piguet caliber 2610 quartz watch movement. This ultra thin caliber stands only 1.9mm tall and can be found in smaller ladies size (24.5mm) Royal Oak 2610 watches. Watches were using this movement starting circa 1990.

Accuracy

According to Audemars Piguet, the accuracy of the quartz caliber 2610 is +/-2 minutes per year.

Battery Power Reserve

A fresh battery should last for a minimum of 24 months. The battery cell is a number 321 or 364 depending on the watch model. Both of these cells have a diameter of 6.80mm, but the thickness differs: 1.65mm vs 2.10mm. Both battery cells have a voltage rating of 1.55 V.

Time Setting Instructions

The AP caliber 2610 has three crown positions.

  • The crown against the case (position 1)
  • Pull the crown out (or unscrew the crown, then pull) one click (position 2) for date setting.
  • Pull one more click (position 3) for time setting.

In Audemar Piguet’s Own words:

“Quartz is a dominant element at Audemars Piguet. Used for the first time in the 70s, it completely revolutionised the notions of horological precision. Despite its superior performance, quartz technology does not enjoy the same prestige as mechanical watchmaking. However, in deciding to optimize the performance of its electronic movements, Audemars Piguet revives the glory of this advanced technology which enables the creation of ultrasophisticated instruments for professionals.”

AP Explains the technology:

“From the technical point of view, quartz movement are based on a regulator (the time-measuring element) consisting of a quartz crystal through which an electric current is passed. This “resonator” vibrates at an extremely high frequency (32’768 Hz), dividing the time into equal intervals. In an analogue display quartz watch, an integrated circuit records the electric signals transmitted by the quartz oscillator and divides their frequency into pulses equivalent to one, five or ten seconds.” -AP Quartz Movement Manual

Additional Resources:

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