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Hamilton H-10

High confidence

The workhorse of the modern line and the caliber behind most current Hamilton automatics. The point an examiner needs is the beat: 21,600 vph where the 2824-2 ancestor runs 28,800. The slower balance is how the 80-hour reserve is reached and is factory-correct — a timing trace at 3 Hz on a current Hamilton confirms the caliber rather than casting doubt on it.

Specifications

Movement manufacturer
Hamilton
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 C07.111 automatic — itself a development of the 2824-2 — with a single barrel, a full rotor, and the beat reduced to obtain an extended reserve.

Service practice

Shares most of its architecture with the 2824-2 family, so servicing is routine and parts are available throughout the Swatch Group network. The escapement components are not interchangeable with a standard 2824-2 and a movement rebuilt with 2824 escapement parts will not hold the extended reserve.

Related calibers

  • Built on

    ETA 2824-2

    Via the C07 family, which is an ETA development of the 2824-2 rather than a distinct architecture.

  • Related caliber

    Tissot Powermatic 80

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

References using this caliber

Provenance of this record

Sources & Evidence

Primary sourceManufacturer documentation

Hamilton — current collection and caliber specifications

Hamilton International Ltd (Swatch Group)

Accessed
2026-08-19

Cited for

This referenceHigh confidence
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Last verified: Not yet reviewed