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
ReferenceH77636343
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 H77636343

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Khaki Navy H77636343, seen from the bench

The Hamilton Khaki Navy H77636343 is a 42mm stainless steel chronograph with a 22mm lug width. It features a black dial with applied white numerals, bidirectional bezel, and an ETA 7750 manual-wind movement offering ±10 seconds per month accuracy and 42 hours power reserve. The 316L steel case with screw-down crown and sapphire crystal with anti-reflective coating ensures durability and readability. This tool watch maintains the functional design philosophy originating from 1940s U.S. Navy pilot instruments, prioritizing robustness and legibility over decoration.

Frequently asked questions

What is the lug width of the Hamilton Khaki Navy H77636343?

The lug width of the Hamilton Khaki Navy H77636343 is 22mm. This measurement is determined by the distance between the two internal lugs of the case where the strap is seated. To verify this dimension, measure the internal space between the spring bar holes on the case.

What is the best strap for the Hamilton Khaki Navy H77636343?

The ideal strap depends on intended use. For formal or business casual contexts, an alligator strap in cognac brown or vegetable-tanned calf leather enhances the tool watch character with sophistication. For tactical or sporting applications, a navy NATO strap or rubber strap reinforces the military heritage. Ecologically regenerated fabrics offer chromatic stability and require no maintenance.

How do I change the strap on the Hamilton Khaki Navy H77636343?

Changing the strap requires a dedicated spring bar tool. Position the watch with the strap facing downward, insert the tool's tip beneath the lug pin (spring bar) to compress the internal spring, remove the pin, and replace the old strap with the new one. Ensure the pins lock completely within the case to prevent accidental loss.

Can I use an aftermarket strap on this Hamilton?

Yes, provided it is compatible with the 22mm lug width. Always verify that the internal width of the strap corresponds precisely to 22mm: even 0.5mm deviation compromises the fit and risks damaging the case lugs. Artisan Milan straps are manufactured to exacting tolerances and guarantee perfect compatibility.

How long does a leather strap last on a Hamilton Khaki Navy?

Durability depends on the material and usage pattern. High-quality alligator withstands 8–12 years with regular maintenance (semestral cleaning and conditioning). Vegetable-tanned calf leather ages naturally over 4–7 years, developing a beautiful patina. On a heavy-duty chronograph like the H77636343, the strap experiences significant dynamic stress: inspect the anchorage points at the case lugs periodically.

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