Inspired by the FAPD 5101 navigator’s watch issued to U.S. Air Force crews around 1970, the revives the rugged simplicity of a true military tool. Its matte case, fixed bars, acrylic box glass and khaki cotton NATO strap stay faithful to the original specifications, enhanced with Super LumiNova® Grade X2 and a protective dust cover. Produced exclusively in 2026, this special edition piece honors Hamilton’s military heritage with authentic, purpose built detail.
Specifications
ReferenceH69399930
CaliberH-50
CollectionKhaki Field
MovementMechanical
Case size36mm
Thickness (mm)10.2
Dial colorBlack
Case materialStainless steel
CrystalAcrylic
Lug to lug46mm
Lug width18mm
Power reserve80 hour
StatusCurrent collection
Water Resistance10 bar (100m)
NivachronYes
Super LuminovaYes
Strap
Strap referenceH6000002601
Strap typeTextile
Buckle typePin buckle
Buckle width18mm
Movement
H-50
The H-50 is an exclusive caliber specifically developed for our handwinding watches. The H-50 is available with or without a date function and has an extended power reserve of up to 80 hours, ensuring maximum reliability even when it is not wound for a few days.
We offer standard delivery for all orders. Place your order today and get it delivered within two to five working days.
If you would like your order to arrive sooner you can select “Express delivery” for the amount of £5.95 and the order will be delivered within 24-48 hours (working days).
To find out more information about our delivery options please visit “Delivery & Returns”
Return
We offer free returns within 14 days from delivery.
For more information, please visit “Returns Policy”
Features
Military Heritage Engraved
Paying tribute to the original FAPD 5101, this exclusive engraving links today’s Khaki Field Mechanical to its authentic military origins.
MANUAL WINDING
Wind your mechanical watch by turning the crown clockwise.
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.
NIVACHRON™ BALANCE SPRING
Nivachron™ is an alloy used to produce balance spring to resist magnetic fields and improve accuracy. It reduces the effects of magnets, temperature, and shocks.
H-50 CALIBER
An exclusive caliber specifically developed for our handwinding watches, the H-50 has an extended power reserve of up to 80 hours.
WATER RESISTANCE
Your timepiece is resistant up to 10 bar (100m) / 145 psi (328 ft).
A Legacy Reborn
A modern revival of the iconic FAPD 5101, the Khaki Field Mechanical 36 brings its 1970s military spirit into the present with refined details
Exclusively Produced in 2026
This special Khaki Field will be produced only throughout 2026 to celebrate the 250th anniversary of the Declaration of Independence in U.S.A.
5/5
Overall rating | 3 reviews
As a vintage watch enthusiast, this one is absolutely perfect. It captures the 1970s feel beautifully, from the vintage Hamilton logo to the engraved caseback and the solid spring bars. The attention to detail is outstanding and really makes the watch feel special. Even the included strap is excellent, which is something I can't say about many watches. It's comfortable, looks great, and complements the watch perfectly. I honestly couldn't ask for anything better. Hamilton got everything right with this release. It's the complete package.
Calyn B.
June 15, 2026
I love the watch, it keeps amazing time and is super comfortable. I’ve owned all the high-end brands and none have made me smile like this one
JAMES G.
June 7, 2026
Perfect size for the KFM, exactly what has been missing from the KFM lineup.
