Hamilton American Classic Hamilton Necklace H31231140
Ref. H31231140 · Blue dial · In production
- Case15 mm
- Thick8.05 mm
- Water res.50 m
- MovementQuartz
- CrystalSapphire
Hamilton American Classic Hamilton Necklace H31231140 size, specs and price at a glance
The Hamilton American Classic Hamilton Necklace H31231140 is 15 mm wide and 8.05 mm thick. Hamilton does not publish its lug-to-lug length. and ships on a bracelet. Inside is the 280.002 quartz calibre, water resistant to 50 m. US list price: $775 when we last checked hamiltonwatch.com (3 Nov 2026).
Strap shopping? See our Hamilton lug width chart.
Overview
The Hamilton H31231140 is a dress watch from the American Classic collection, part of the American Classic Hamilton Necklace family. It has a 15 mm stainless steel case, 8.05 mm thick. Hamilton lists the dial as blue. Inside is a quartz movement (calibre 280.002). You also get 50 m water resistance, a sapphire crystal and a bracelet.
Who it suits
- Wrists of roughly 5.3–7.2 cm (2.1–2.8 in), by our Watch Finder sizing guide
- Desk and dress wear (keep it away from swimming)
- Shirt cuffs and smarter dress codes
- Grab-and-go wear without winding or setting
Strengths
- Sapphire crystal resists scratches
- Slim at 8.05 mm
Trade-offs
- Only 50 m water resistance: splash-proof, not for swimming
Written by Watch.co from the published specs below. These are not owner reviews.
Full specifications
Case
| Case diameter | 15 mm | hamiltonwatch.com · 3 Nov 2026 |
|---|---|---|
| Thickness | 8.05 mm | hamiltonwatch.com · 3 Nov 2026 |
| Lug-to-lug | Not published by Hamilton | |
| Case material | Stainless steel | hamiltonwatch.com · 3 Nov 2026 |
| Crystal | Sapphire | hamiltonwatch.com · 3 Nov 2026 |
| Water resistance | 50 m | hamiltonwatch.com · 3 Nov 2026 |
Dial
| Dial colour | Blue | hamiltonwatch.com · 3 Nov 2026 |
|---|
Movement
| Movement type | Quartz | hamiltonwatch.com · 3 Nov 2026 |
|---|---|---|
| Calibre | 280.002 | hamiltonwatch.com · 3 Nov 2026 |
Strap / Bracelet
| Bracelet / strap | Bracelet | hamiltonwatch.com · 3 Nov 2026 |
|---|
Other
| US list price (MSRP) | $775 | hamiltonwatch.com · 3 Nov 2026 |
|---|---|---|
| Production status | In production | hamiltonwatch.com · 3 Nov 2026 |
| Style (our classification) | Dress | our classification |
Specs are summarised in our own words from the brand's product page. Each row links its source and the date we checked it. Fields we haven't verified are left out rather than guessed.
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Questions about the Hamilton American Classic Hamilton Necklace H31231140
How big is the Hamilton American Classic Hamilton Necklace H31231140?
The case is 15 mm wide, 8.05 mm thick.
What movement does the Hamilton American Classic Hamilton Necklace H31231140 use?
It uses the 280.002 calibre, a quartz movement.
Can I swim with the Hamilton American Classic Hamilton Necklace H31231140?
Not really. It is rated to 50 m.
How much is the Hamilton American Classic Hamilton Necklace H31231140?
The US list price was $775 on hamiltonwatch.com when we checked on 3 Nov 2026. Prices change, so check before you buy.
Will the Hamilton American Classic Hamilton Necklace H31231140 fit my wrist?
By our sizing guide it sits best on wrists of about 5.3–7.2 cm (2.1–2.8 in). Use the fit checker on this page to test your own wrist.
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