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Hamilton · Jazzmaster

Strap for Jazzmaster Automatic Chronograph 42mm Silver Dial PVD Gold

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

Lug width

22mm
22 mm strapsAll Hamilton
Lug width22 mm
Case diameter42 mm
ReferenceH32646555
FamilyJazzmaster
MovementETA caliber 7753 hours, minutes, small seconds | date | Chronograph
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 H32646555

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Jazzmaster H32646555, seen from the bench

The Hamilton H32646555 Jazzmaster Automatic Chronograph is a 42mm pilot's chronograph featuring an ETA 7753 movement. The stainless steel case with PVD gold coating houses a silver dial with subdials. Part of Hamilton's Jazzmaster collection, it combines aviation heritage with contemporary reliability. Strap size is 22mm.

Frequently asked questions

What is the lug width of the Hamilton Jazzmaster H32646555?

The Hamilton Jazzmaster H32646555 features a <a href="/pages/termine-glossario/misura-ansa">lug width</a> of 22mm. This standard measurement accommodates a broad range of artisanal and industrial watch straps, making it one of the most versatile models in the Jazzmaster collection. The 22mm width was chosen to maintain proportional harmony on the 42mm case, ensuring aesthetic balance between the dial and the wrist.

Which type of strap suits the Jazzmaster H32646555 best?

Given its technical character and sport-oriented design philosophy, we recommend straps made from <a href="/pages/termine-glossario/concia-vegetale">vegetable-tanned leather</a> with medium-to-heavy gauge, or robust materials such as chrome-tanned calf leather. For a more casual pairing, woven NATO straps or vulcanised rubber elevate its aviator aesthetic. The stainless steel case particularly benefits from neutral-toned straps: dark brown, black, slate grey.

How do you measure a watch's lug width?

The <a href="/pages/termine-glossario/misura-ansa">lug width</a> is determined by measuring the distance between the two spring bars connecting the strap to the case, excluding the lugs themselves entirely. For the H32646555, use a calliper or thin ruler: the distance will be precisely 22mm. This measurement is essential to ensure proper strap seating and prevent slack or excessive tension on the spring bars.

Can I use a third-party aftermarket strap on this Hamilton?

Yes, you may absolutely use aftermarket straps compatible with the 22mm <a href="/pages/termine-glossario/misura-ansa">lug width</a>. The H32646555 contains no proprietary construction features requiring branded straps. Any quality strap fitted with standard 22mm spring bars—whether straight or curved—will mount without issue. We recommend verifying the strap thickness to ensure compatibility with the case lugs' pass-throughs.

What is the typical lifespan of a natural leather strap on a daily-wear watch?

A high-quality leather strap, crafted from <a href="/pages/termine-glossario/concia-vegetale">vegetable-tanned leather</a>, maintains structural integrity for 3–5 years of daily wear, depending on humidity exposure, direct sunlight, and perspiration contact. Natural leather ages predictably: edges gradually curl, patina deepens, and flexibility increases. This is not deterioration but aesthetic evolution. Chrome-tanned calf straps may perform reliably for 6–7 years or longer with periodic maintenance using specialised conditioning creams.

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