Hamilton H-31
Quick answer
What is the Hamilton H-31?
Official Hamilton data confirms H-31 automatic chronograph movement with date and 60-hour power reserve.
- Jewels
- 27
- Power reserve
- 60h
- Linked watches
- 1
Why this movement matters
Power reserve
60 hours means you can take the watch off over a weekend and it will usually still be running Monday morning.
Frequency
28,800 beats/hour / 4 Hz is a common modern automatic rate. Higher frequency can improve stability in some conditions, but service access and long-term ownership matter more than Hz alone.
Serviceability
Good in principle through Hamilton / Swatch Group service channels. Do not claim cheap independent service or fixed costs without a direct source.
Movement honesty
Movement honesty classification pending editorial review.
Technical specifications
Serviceability
Good in principle through Hamilton / Swatch Group service channels. Do not claim cheap independent service or fixed costs without a direct source.
Best watches using this movement
WatchIntel linked watches
Published references in our database. This list is not complete.
Compared with similar movements
Similar movement comparisons pending editorial review.
Frequently asked questions
What is the Hamilton H-31?+
Hamilton H-31 is a Hamilton caliber (H-31). Official Hamilton data confirms H-31 automatic chronograph movement with date and 60-hour power reserve. Secondary technical sources identify H-31 as ETA/Valjoux 7753-based, with 27 jewels and 28,800 vph frequency. Do not describe it as in-house manufacture or confuse it with Hamilton H-21.
What is the Hamilton H-31 based on?+
The architecture traces to ETA / Valjoux 7753 (secondary source: WatchBase H-31). WatchIntel classifies lineage separately from marketing "in-house" claims.
What are the key specs of the Hamilton H-31?+
Core specs: 27 jewels, 60-hour power reserve, automatic. See the technical specifications table for escapement, certification, and functions.
How easy is it to service the Hamilton H-31?+
Good in principle through Hamilton / Swatch Group service channels. Do not claim cheap independent service or fixed costs without a direct source.
Which watches use the Hamilton H-31?+
WatchIntel links 1 published watch to this caliber in our database. Our database is not complete.
WatchIntel is independent. Not affiliated with Hamilton, Rolex, Omega, TAG Heuer, Seiko, Tudor, Hublot or any other watch brand.