The ETA caliber C07.621 is a Swiss made automatic watch movement with a day-date function. It has 25 jewels and a beat rate of 21,600 vph, 3Hz. This caliber is essentially an evolution of the ETA 2836-2 and as a Powermatic 80 movement, it offers a more modern 80 hours power reserve. The C07.621 is available as a COSC chronometer certified movement. Despite some incorrect information online, this caliber is not equipped with a silicon hairspring or synthetic escapement.
This caliber is only available for use in Swatch Group brand watches such as Mido (cal. 80), Certina, and Hamilton (cal. H-30).
Note: This caliber listing is still being updated, but feel free to start discussions on it in the comments below…
network of watch sites
Recent Comments
My Hamilton chronograph: With the crown pointing horizontally out – minus 2 seconds a day.…
You will encounter countless issues trying to do this: the holes in the dial won't…
Horrible movement. Mine was running -40 per day, almost 1ms beat error. Had it serviced,…
Does anyone know if this caliber is actually an in-house Cartier caliber, or is it…
I do get a little tired of having to guess the ins and outs of…
Fantastic movement, this series of movements from eta are one of the best imo.
Hi Bobmartens, the chart has been updated. Please see the section "Caliber 763 VS 763E"…