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Tissot Powermatic 80

High confidence

Powermatic 80.111 · C07.111

The most important caliber in the modern Swatch Group volume brands and the one an examiner meets most often. Its identifying property is the beat: 21,600 vph, deliberately slowed from the 28,800 of its 2824-2 ancestor to obtain the 80-hour reserve. Everything a counterfeiter is likely to substitute runs faster, which makes the seconds hand a reliable first test.

Specifications

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

Architecture

An ETA C07 automatic — a development of the 2824-2 with a longer barrel and a slowed balance — with centre seconds and a date. Later production carries a Nivachron hairspring and, on many executions, a synthetic escapement.

Authentication notes

  • MovementHigh confidence

    Six beats per second, not eight

    At 21,600 vph the seconds hand advances six times a second. A generic automatic at 28,800 advances eight. On a watch claimed to carry a Powermatic 80 this single observation, made with the naked eye or a phone timing app, is the most efficient authentication check anywhere in this catalog for the effort involved.

  • MovementHigh confidence

    The rotor and bridge layout are distinctive through a display back

    The C07 presents a large single bridge over the train and a rotor carrying the brand signature. It does not resemble a 2824-2 closely enough to be confused with one at a glance, and it resembles a Chinese clone movement not at all. Where the reference has a display back, use it.

Service practice

Regulation is by a free-sprung-style arrangement without conventional regulator pins on most executions, which means adjustment is not the routine bench operation it is on a 2824-2 and is frequently declined by independent watchmakers. A Powermatic 80 running fast or slow is often left uncorrected for this reason, and that is a service reality rather than a fault in the watch.

Related calibers

  • Built on

    ETA 2824-2

    Through the C07 family, which ETA developed from the 2824-2 rather than designing afresh.

  • Related caliber

    Hamilton H-10

    The same C07 architecture under a different Swatch Group brand's designation. Recognising one recognises the other.

  • Related caliber

    Rado R764

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

  • Related caliber

    Mido Caliber 80

    The same architecture under another Swatch Group brand's designation.

  • Related caliber

    Certina Powermatic 80

    The same caliber under the same name at a sibling brand.

References using this caliber

Provenance of this record

Sources & Evidence

Primary sourceManufacturer documentation

Tissot — collection and caliber specifications

Tissot SA (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