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Hamilton · Jazzmaster

Strap for Jazzmaster Viewmatic 40mm

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

Lug width

20mm
20 mm strapsAll Hamilton
Lug width20 mm
Case diameter40 mm
ReferenceH32545555
FamilyJazzmaster
MovementETA caliber 2824-2 hours, minutes, seconds | date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

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Straps for the Jazzmaster H32545555

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Jazzmaster H32545555, seen from the bench

The Hamilton Jazzmaster mounts the automatic ETA 2824-2 caliber with indication of hours, minutes, seconds and date. The model has 20mm lugs and stands out for the classic design of the Jazzmaster collection. The reference H32545555 represents a proposal from the Swiss watchmaker Hamilton in the segment of automatic timepieces.

Frequently asked questions

What is the exact lug width of the Hamilton Jazzmaster H32545555?

The lug width (ansa width) of the Hamilton Jazzmaster H32545555 is precisely 20.00mm. This measurement must be verified using a digital calliper positioned between the inner pins of the lugs. On this specific reference model, there are no variations: all H32545555 examples feature 20mm lugs.

Which strap pairs best with the Hamilton Jazzmaster H32545555?

The Jazzmaster H32545555 reveals its full potential with premium leather straps: alligator with vegetable tanning for formal elegance, shell cordovan for evolved patina over time, European satin calf for daily versatility. For sports usage, tactical NATO nylon provides swift swaps, whilst vulcanised rubber offers mechanical protection. Choice depends on intended use and the specific dial variant of your example.

How do I change the strap on this watch?

Changing the strap on the Jazzmaster H32545555 requires a spring bar tool (fork-shaped instrument). Position the fork under the pin, apply gentle pressure toward the case to retract the internal spring, extract the pin. Repeat on the other side. Insert the new strap, aligning the holes on the 20mm lug, ensuring both pins are fully seated and the springs click into place. If inexperienced, consult a specialised retailer.

Are there aftermarket straps compatible with the H32545555?

Yes, any strap with a 20mm lug width is compatible with the Hamilton Jazzmaster H32545555. However, quality varies considerably: artisanal straps crafted from premium leather (alligator, shell cordovan, vegetable-tanned calf) ensure durability, controlled patina development and comfort. Avoid generic fast-fashion watch straps; an instrument like the Jazzmaster deserves attention to materials and craftsmanship.

How long does a leather strap last on the Hamilton Jazzmaster H32545555?

A premium leather strap on daily wear maintains structural integrity between 3 and 7 years, depending on tanning method, frequency of use and environmental humidity. Vegetable-tanned leather tends to patina whilst enriching aesthetically; industrial tanning may dry out and crack. Shell cordovan, if maintained carefully, can exceed 10 years. Longevity increases significantly if the strap is rotated with others, protecting the leather from constant perspiration exposure.

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