- Reference H76409540
- Caliber H-51-Si
- Collection Khaki Aviation
- Movement Mechanical
- Watch Function Power reserve, Chronograph
- Case size 40mm
- Thickness (mm) 14.35
- Dial color Blue
- Case material Stainless steel
- Crystal Sapphire
- Lug width 22mm lug width
- Power reserve 60 hour
- Status status_current_collection
- Water Resistance 10 bar (100m)
- Anti Reflection Yes
- Super Luminova Yes
- Silicon Balance Spring Yes
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- Khaki Aviation Pilot Pioneer Mechanical Chrono

Khaki Aviation Pilot Pioneer Mechanical Chrono
Mechanical | 40mm | H76409540






Rugged and reliable, the Khaki Pilot Pioneer Mechanical Chronograph pays homage to Hamilton's vintage military aviation watches. Powered by our exclusive hand-wound H-51-Si movement, this timepiece boasts a 60-hour power reserve and a stunning Aviation Blue dial with a sunray finish.
Specifications
Strap
- Strap reference H6000001981
- Strap type Cow leather
- Buckle type H-Buckle
- Buckle width 22mm
Movement
H-51-Si
The H-51-Si is a mechanical chronograph movement featuring a state-of-the-art balance spring made from the anti-magnetic material silicon for enhanced resistance to extreme atmospheric conditions. With an extended 60-hour power reserve, this hand-wound caliber keeps and measures time via an iconic dial complete with start/stop and reset pushers. With no rotor and no date function, this interactive movement brings modern reliability and precision to signature, vintage-inspired design.

Delivery & Return
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Delivery
We offer standard delivery with Toll within 2 to 5 working days unless otherwise advised. Please note that orders with strap adjustments might delay your order. As soon as the order is shipped, you will be notified by email, with the tracking number associated to your package. To find out more information about our delivery options please visit our FAQ.
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Return
We offer free returns within 14 days from delivery. For more information, please visit “Returns Policy”
Features
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MANUAL WINDING
Wind your mechanical watch by turning the crown clockwise until it blocks.
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SUPER-LUMINOVA®
Super-LumiNova is a type of luminescent material applied to hands, dials and bezels to make them visible in the dark.
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STAINLESS STEEL CASE
A highly resistant alloy composed of steel and chromium. It can be worked to resemble a precious metal. It is nearly impervious to rust, tarnish, and corrosion.
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Sapphire Crystal
Synthetic sapphire crystal is a tough scratch-resistant material, only diamonds could leave a mark.
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SILICON BALANCE SPRING
Silicon balance springs offer various advantages: immune to magnetic fields, temperature fluctuations, oxidation, aging, shocks, and maintains shape stability.
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WATER RESISTANCE
Your timepiece is resistant up to 10 bar (100m) / 145 psi (328 ft).
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KHAKI AVIATIONThe Khaki Aviation collection perfectly displays Hamilton's technical know-how when it comes to creating reliable watches for pilots and urban aviators.