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Rado R764

High confidence

Rado's R-prefixed caliber numbers are Rado designations for ETA movements, in exactly the way Tissot's Powermatic and Hamilton's H-series are. Recognising the C07 signature — 21,600 vph, 80 hours, a single broad bridge — identifies the movement across all of them. There is no in-house Rado architecture to look for and expecting one produces false findings. Note the neighbouring designations, which are easy to conflate: the R764 is C07.111-based with a day-date, while the R763 is built on the C07.611. An earlier revision of this record had the R764 on the C07.611 and it was wrong.

Specifications

Movement manufacturer
Rado
Base caliber
ETA C07.111
Frequency
21,600 vph (3 Hz)
Power reserve
80 hours
Winding
automatic
Complications
Centre seconds · Day · Date
Balance
Nivachron hairspring on current production

Architecture

An ETA C07 automatic with day and date, in Rado's designation. Long barrel, slowed balance, extended reserve, Nivachron hairspring.

Related calibers

  • Built on

    ETA 2824-2

    Through the C07 family.

  • Related caliber

    Tissot Powermatic 80

    The same architecture under a different Swatch Group brand's name. The Rado execution adds a day.

References using this caliber

Provenance of this record

Sources & Evidence

Primary sourceManufacturer documentation

Rado — collection specifications and material documentation

Rado (Swatch Group)

Accessed
2026-08-19

Cited for

This referenceHigh confidence
View source ↗
Primary sourceTechnical documentation

ETA movement technical communications and specification sheets

ETA SA Manufacture Horlogère Suisse

Accessed
2026-08-19

Cited for

This referenceHigh confidence

Last verified: Not yet reviewed