Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono H76409540
Ref. H76409540 · Blue dial · In production
- Case40 mm
- Thick14.35 mm
- Water res.100 m
- MovementManual-wind
- CrystalSapphire
Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono H76409540 size, specs and price at a glance
The Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono H76409540 is 40 mm wide and 14.35 mm thick. Hamilton does not publish its lug-to-lug length. It takes 22 mm straps and ships on a leather strap. Inside is the H-51-Si manual-wind calibre, water resistant to 100 m. US list price: $2,395 when we last checked hamiltonwatch.com (3 Nov 2026).
Strap shopping? See our Hamilton lug width chart.
Overview
The Hamilton H76409540 is a chronograph watch from the Khaki Aviation collection, part of the Khaki Aviation Pilot Pioneer Mechanical Chrono family. It has a 40 mm stainless steel case, 14.35 mm thick. Hamilton lists the dial as blue. Inside is a manual-wind movement (calibre H-51-Si) with 60 h of power reserve. You also get 100 m water resistance, a sapphire crystal and a leather strap.
Who it suits
- Wrists of roughly 16.0–17.9 cm (6.3–7.0 in), by our Watch Finder sizing guide
- Everyday wear including swimming
Strengths
- Sapphire crystal resists scratches
Trade-offs
- Thick at 14.35 mm: harder to slide under a cuff
Written by Watch.co from the published specs below. These are not owner reviews.
Full specifications
Case
| Case diameter | 40 mm | hamiltonwatch.com · 3 Nov 2026 |
|---|---|---|
| Thickness | 14.35 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 | 100 m | hamiltonwatch.com · 3 Nov 2026 |
Dial
| Dial colour | Blue | hamiltonwatch.com · 3 Nov 2026 |
|---|---|---|
| Chronograph | Yes | hamiltonwatch.com · 3 Nov 2026 |
Movement
| Movement type | Manual-wind | hamiltonwatch.com · 3 Nov 2026 |
|---|---|---|
| Calibre | H-51-Si | hamiltonwatch.com · 3 Nov 2026 |
| Power reserve | 60 h | hamiltonwatch.com · 3 Nov 2026 |
Strap / Bracelet
| Bracelet / strap | Leather strap | hamiltonwatch.com · 3 Nov 2026 |
|---|---|---|
| Lug width | 22 mm | hamiltonwatch.com · 3 Nov 2026 |
Other
| US list price (MSRP) | $2,395 | hamiltonwatch.com · 3 Nov 2026 |
|---|---|---|
| Production status | In production | hamiltonwatch.com · 3 Nov 2026 |
| Style (our classification) | Chronograph | 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.
Variants with the same specs
Same case, movement and bracelet or strap; typically a different dial or finish.
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Questions about the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono H76409540
How big is the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono H76409540?
The case is 40 mm wide, 14.35 mm thick.
What movement does the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono H76409540 use?
It uses the H-51-Si calibre, a manual-wind movement with 60 h of power reserve.
Can I swim with the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono H76409540?
Yes. It is rated to 100 m.
How much is the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono H76409540?
The US list price was $2,395 on hamiltonwatch.com when we checked on 3 Nov 2026. Prices change, so check before you buy.
Will the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono H76409540 fit my wrist?
By our sizing guide it sits best on wrists of about 16.0–17.9 cm (6.3–7.0 in). Use the fit checker on this page to test your own wrist.
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