ETA 2801-2
High confidenceSeeded as the base of Hamilton's H-50 and as a reference point elsewhere in the catalog. Its standard specification — 28,800 vph, 17 jewels, 42 hours — is what makes the Hamilton derivative legible: every one of those numbers was deliberately changed to obtain the 80-hour reserve, so the differences are the signature rather than an anomaly.
Specifications
- Movement manufacturer
- ETA
- Frequency
- 28,800 vph (4 Hz)
- Jewels
- 17
- Power reserve
- 42 hours
- Winding
- manual
- Complications
- Centre seconds
Architecture
The hand-wound member of the 2824 family: same plate architecture and escapement, no automatic winding module, no calendar.
Related calibers
Related caliber
ETA 2824-2Derivative
Hamilton H-50
References using this caliber
No catalog references are linked to this caliber yet.
Provenance of this record
Sources & Evidence
Secondary sourceCollector research
Ranfft Watch Movement Archive
Dr. Roland Ranfft (archived and maintained by volunteers)
- Accessed
- 2026-08-18
Cited for
This referenceHigh confidence
Last verified: Not yet reviewed