Oris caliber 635 is a Swiss made automatic watch movement that is based on the ETA cal. 2836-2 – in fact, it is an ETA 2836-2 with a custom Oris rotor (either red style or silver), and the ETA markings can be seen under the balance wheel. This caliber has 25 jewels and a beat rate of 28,800 vph (4 Hz). It is equipped with a day/date calendar complication.
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Recent Comments
No, this caliber does not have a low battery indicator/EOL feature.
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