Hamilton · Khaki Navy

Strap for Khaki Navy Regatta

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter42 mm
ReferenceH77636143
FamilyKhaki Navy
MovementETA caliber 7750 hours, minutes, small seconds | date, day | Chronograph
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Khaki Navy H77636143

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Khaki Navy H77636143, seen from the bench

The Hamilton Khaki Navy H77636143 is a 42mm stainless steel chronograph featuring an ETA caliber 7750 movement. The watch displays hours, minutes, and small seconds via three counters, with day and date windows, all housed under a water-resistant case to 100 meters. With a 22mm lug width, this model balances functional military design with refined aesthetics.

Frequently asked questions

What is the exact lug width of the Hamilton Khaki Navy H77636143?

The Hamilton Khaki Navy H77636143 features a lug width of 22mm. This measurement is taken perpendicularly between the spring bar holes that attach the strap to the case. A digital calliper allows precise measurement and ensures correct identification of compatible straps.

Which strap material is best for the Hamilton Khaki Navy H77636143?

There is no universally "best" choice. For formal occasions, vegetable-tanned alligator offers elegance and natural patina development. For versatility, French calf ensures aesthetic uniformity. For practicality and military heritage, regenerated polyester NATO straps are ideal. For outdoor activities, technical rubber provides grip and durability.

How do you correctly change the strap on the Hamilton Khaki Navy H77636143?

Position the watch with the lugs facing upward. Use a spring bar tool to gently lift the lower spring bar, creating space to remove the existing strap. Insert the new strap into the upper lug first, then lower the spring bar until it clicks into place. Verify stability before wearing.

Is a 22mm aftermarket strap compatible with the Hamilton Khaki Navy H77636143?

Yes, any strap with a 22mm lug width is mechanically compatible. However, aesthetic harmony depends on thickness, wrist width, and design. Artisanal straps with careful lug finishing ensure optimal visual integration with the 42mm case, avoiding disproportionate effects.

What is the average lifespan of a leather strap for this watch?

A quality leather strap (alligatore, calf, shell cordovan) with vegetable tanning typically lasts 3 to 7 years with intensive use, depending on care and UV/humidity exposure. Rotating between multiple straps extends each strap's life. Regular cleaning with soft, damp cloths, avoiding harsh soaps, significantly extends durability and enhances natural patina.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only