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Rolex Caliber 6620 Quartz Specs

Rolex Caliber 6620

BrandRolex
Caliber Number6620
Movement TypeQuartz
Jewels8
Crystal Oscillator Frequency
32,768 Hz (cycles per second)
Duration of Impulse7.80 ms
Overall Diameter19.80mm
Battery (Cell) NumberSR 721 SW (1.55V)
FunctionsHours, minutes
Country of ManufactureSwitzerland
Known Models6623

Despite popular belief, Rolex also produces quartz movements, notably the caliber 6620 found in some Cellini models (ie: Rolex 6623). Some other characteristics are:

  • Stop motor device
  • Rotative stepping motor: 1 step every 10 seconds
  • Acceleration device for checking the train: 32 steps/sec

Rolex Caliber 6620 Quartz Specs


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Steve Tang
Steve Tang
6 years ago

Learn something every day. Didn’t know Rolex had a quartz watch.

Patrick
Patrick
3 years ago

Can anyone get me a part for this watch or quote me new movement please?

Roger
Roger
3 years ago

Is this caliber thermocompensated?

Hisham M Al Zairy
Hisham M Al Zairy
5 months ago

Great looking watch and movement

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