- Reference H77906940
- Caliber H-21-Si
- Collection Khaki Aviation
- Movement Automatic
- Watch Function Chronograph, Date, Day
- Case size 45mm
- Thickness (mm) 14.85
- 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
- Open Case Back Yes
- Screw Down Crown Yes
- Silicon Balance Spring Yes
Khaki Aviation X-Wind Auto Chrono
Automatic | 45mm | H77906940





Designed with pilots in mind and built for a life of adventure, the Khaki Aviation X-Wind Automatic Chronograph flies through the crosswinds in a bold new guise, with camouflage patterns and new color variants extending across the dial, strap and case. Featuring an inner rotating bezel and an anti-magnetic Silicon hairspring, this high-performance piece has combat-chic looks and assertive style.
Featured in The Fall Guy 2019 Worn by Charlotte Field play by TBD "Robinson"
Featured in The Fall Guy 2019 Worn by Charlotte Field play by TBD "Robinson"
Specifications
Strap
- Strap reference H6007791011
- Strap type Textile
- Buckle type Pin buckle
- Buckle width 22mm
Movement
H-21-Si
The H-21-Si is an automatic 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 powerful caliber reliably keeps and measures time via two or three sub dials at 6, 9 and/or 12 o’clock, and start/stop and reset pushers on the side.

Information
- Free return within 14 days
- Express delivery within 24 - 48 hours
- Payment by Visa, MasterCard or Apple Pay
- 2-year international warranty
- Customer service : +32 2 558 38 97 from Monday to Friday from 9 am to 5 pm
Delivery & Return
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Delivery
We offer free express delivery on all watch orders. Place your order today and receive it within 24 to 48 working hours. If you would like to order a bracelet only, delivery will cost you €5 and receive it within 24 to 48 working hours. For more information on our delivery options, please see "Delivery and returns".
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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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SELF-WINDING
Wrist movements cause the inner rotor to swing, transferring energy to the mainspring, and powering your timepiece.
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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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H-21-Si CALIBER
A powerful automatic chronograph movement featuring an extended 60-hour power reserve. Equipped a state-of-the-art balance spring made from the anti-magnetic material silicon.
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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.