Hamilton · Jazzmaster

Strap for Jazzmaster Viewmatic 37mm

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter37 mm
ReferenceH32455555
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

Straps for the Jazzmaster H32455555

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Jazzmaster H32455555, seen from the bench

The Hamilton Jazzmaster H32455555 is a 37mm stainless steel watch rooted in 1950s American watchmaking tradition. It houses the ETA 2824-2 automatic movement with 28,800 vph frequency and approximately 40 hours power reserve, offering ±10 seconds per day accuracy. The 316L stainless steel case features a transparent caseback, clean dial with legible indices, and 18mm lug width that complements its balanced proportions without excess ornamentation.

Frequently asked questions

What is the lug width of the Hamilton Jazzmaster H32455555?

The Hamilton Jazzmaster H32455555 features a lug width of 18mm. This dimension is essential for aftermarket strap selection: it must match precisely to ensure secure mounting without lateral play. You can verify compatibility by measuring between the case lugs with a digital caliper.

Which strap is recommended for the Hamilton Jazzmaster H32455555?

We recommend straps in natural alligator or shell cordovan, which enhance the understated American character of the watch. For sportier contexts, a Cordura NATO or natural FKM rubber strap offers practicality and durability. A brushed steel deployante (matching the satin case) completes the aesthetic harmony.

How do you change the strap on the Hamilton Jazzmaster H32455555?

Strap change requires a spring bar tool. Insert the tool into the lug slot to compress the internal spring of the bar, then extract the bar from one end at a time. Repeat on the opposite side. Position the bar on the new strap and insert it into both lugs with symmetrical movements until it clicks into place. Avoid abrupt leverage to prevent case deformation.

Is an 18mm aftermarket strap compatible with the Hamilton Jazzmaster H32455555?

Yes, provided the lug width is precisely 18mm±0.2mm. Certified 18mm straps from specialist manufacturers (Atelier Casati Milano, Swiss and Italian quality brands) are fully compatible. It is advisable to verify the measurement before purchase using a digital caliper to avoid forced fitting or lateral play.

How long does a leather strap last on the Hamilton Jazzmaster H32455555?

A vegetable-tanned calf strap has an average lifespan of 5-7 years with daily use. Shell cordovan, thanks to its denser fibrous structure, can reach 8-12 years. Alligator, if properly maintained, lasts 6-9 years. Durability depends on frequency of use, environmental humidity, and maintenance (periodic cleaning, drying after water contact). FKM rubber straps have shorter durability: 3-5 years under intensive use.

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