THE DESIGN
The Inspiration Behind Its Creation
This special edition pays tribute to Hamilton’s military heritage.
The original FAPD 5101 was developed during the Vietnam War era, a time when Hamilton supplied timepieces to the U.S. Armed Forces under strict military specifications.
Designed for navigators operating in demanding conditions, these watches prioritised reliability and clarity.
The acronym FAPD, standing for Federal Aviation Procurement Division, reflects its dedicated role in aviation missions.
THE PROPORTIONS
36MM FIELD
A 36mm case, matte steel finish, acrylic box crystal and textile NATO strap give it the sort of compact, purposeful character a field watch should have.
THE MOVEMENT
CALIBER H50
The Hamilton Calibre H-50 is a hand-wound mechanical movement developed as an evolution of the classic ETA-based architecture, engineered to deliver enhanced autonomy and reliability.
Designed specifically for field watches, it offers an extended power reserve of up to 80 hours, allowing the watch to run for several days without winding.
Built with 17 jewels and featuring a Nivachron™ balance spring, it provides improved resistance to magnetic fields, temperature variations, and shocks, ensuring consistent performance in demanding conditions. Its manual-winding construction reinforces a traditional, tactile connection to timekeeping, aligning perfectly with the heritage-driven design of Hamilton’s Khaki Field Mechanical collection.
WATER RESISTANCE
10 Bar - 100 Meters
STAINLESS STEEL CASE
- 36mm Diameter
- 10.20mm Height
- 46mm Lug to lug
CRYSTAL
Acrylic Box Shaped Glass with Hard Coating and Anti-Fingerprint Treatment
STRAP
Textile NATO Strap with Pin Buckle
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Hamilton FAQs
Yes. Hamilton watches are made in Switzerland and carry the Swiss Made designation.
Hamilton watches are known for combining practical design, strong military and aviation heritage, and reliable Swiss watchmaking. That blend of American spirit and Swiss precision is what gives the brand its distinctive character.
Yes, all new Hamilton watches include a two-year international warranty covering manufacturing defects. Authorised service centres handle any warranty repairs or maintenance.
To keep your watch in top condition, avoid extreme temperatures, water exposure (unless water-resistant), and strong magnetic fields. Regular cleaning and servicing every 3–5 years helps maintain performance and longevity.
You can find answers to a wide range of topics, from orders and shipping to warranty and returns in our full FAQ section.