Hamilton · Khaki Navy

Strap for Khaki King Scuba Automatic

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter41 mm
ReferenceH64555553
FamilyKhaki Navy
MovementETA caliber 2834-2 hours, minutes, seconds | date, day
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 H64555553

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Khaki Navy H64555553, seen from the bench

The Hamilton Khaki Navy H64555553 is a contemporary evolution of military-heritage timekeeping, featuring a 41 mm stainless steel case with navy dial and luminous indices. The ETA caliber 2834-2 movement operates at 28,800 oscillations per second and includes date and day complications. Water-resistant to 100 metres, this tool watch combines engineering robustness with extreme legibility. The 20 mm lug width ensures versatile strap compatibility while maintaining visual proportion to the case.

Frequently asked questions

What is the lug width of the Hamilton Khaki Navy H64555553?

The lug width of the Hamilton Khaki Navy H64555553 is 20 mm. This measurement indicates the distance between the two attachment pins on the case and must correspond precisely with the width of the strap you intend to install. An incorrect measurement would result in purchasing an incompatible product.

Which strap do you recommend for the Hamilton Khaki Navy H64555553?

For the Khaki Navy H64555553, we recommend three solutions depending on intended use: an alligator strap in black for formal-business contexts, a NATO strap in navy blue or grey for sports and nautical use, a strap in vegetable-tanned calf leather for those who appreciate natural patina and everyday versatility. All available in 20mm lug width.

How do you change the strap on a Hamilton watch?

To replace the strap: remove the watch from your wrist, use a spring bar removal tool to gently push the pin holding the current strap, extract the old strap, insert the new strap in the same position ensuring the pin is locked symmetrically. If you do not possess the tool, a professional jeweller can perform the operation in a few minutes.

Are aftermarket straps compatible with the H64555553?

Yes, any strap with a 20mm lug width is compatible with the Hamilton Khaki Navy H64555553. Our artisanal straps have been tested on this measurement and guarantee a precise fit without play or excessive tension. Always verify that the width is exactly 20mm before purchase.

How long does a quality leather strap last?

A quality leather strap—made from alligator, calf, or vegetable-tanned leather—typically lasts 3-5 years with moderate daily use (5-6 days per week). Longevity depends on water exposure, frequency of maintenance, and tanning type. Vegetable-tanned leather straps develop patina over time, whilst alligator straps maintain their original appearance longer with regular cleaning.

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