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
ReferenceH32455785
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 H32455785

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Jazzmaster H32455785, seen from the bench

The Hamilton Jazzmaster H32455785 is a 37mm stainless steel 316L watch featuring the reliable ETA caliber 2824-2 automatic movement with 40-hour power reserve and COSC precision. The dial displays applied rose gold indices on a silver background with sword hands coated in luminova for night visibility. Water-resistant to 50 meters, it features an anti-reflective sapphire crystal and screw-down caseback. The 18mm lug width is essential to the case proportions and requires proper fitment of straps specifically designed for this measurement.

Frequently asked questions

What is the lug width of the Hamilton Jazzmaster H32455785?

The lug width of the Hamilton Jazzmaster H32455785 is precisely 18mm. This dimension requires specific 18mm watch straps; universal 20mm straps will cause lateral play at the case lugs, compromising the harmonic aesthetic of the model.

Which strap pairs best with the Hamilton Jazzmaster H32455785?

For the H32455785, we recommend alligator straps in dark brown or black to enhance the American austerity, or vegetable-tanned leather for those desiring authentic patina ageing. Alternatively, a grey anthracite NATO or black FKM rubber strap maintains daily versatility. Selection depends on context: formal (alligator), casual-vintage (vegetable-tanned), sporting (NATO/rubber).

How do I change the strap on the Hamilton Jazzmaster H32455785?

Changing the strap requires two tools: a spring bar tool (extractor) and a stable surface. Position the watch with one lug facing you, insert the tool's pin into the spring hole at the base of the lug, gently push upward to compress the spring, and remove the lug. Repeat on the opposite side. Ensure the new strap has an 18mm lug width to prevent lateral play.

Can I fit an aftermarket compatible strap on my Hamilton Jazzmaster H32455785?

Yes, you may fit certified quality aftermarket straps, provided the lug width is exactly 18mm. Aftermarket straps in premium leather (alligator, shell cordovan, vegetable-tanned calf) or technical materials (NATO, FKM rubber) offer aesthetic and functional versatility beyond the original strap. It is advisable to verify total length compatibility with your wrist.

How long does a leather strap last on the Hamilton Jazzmaster H32455785?

Durability depends on leather quality and intensity of use. A high-quality alligator strap lasts 3-5 years with daily wear; vegetable-tanned calf lasts 2-4 years. Factors such as perspiration, sun exposure, and lack of maintenance shorten lifespan. Preventive replacement after 4 years of intensive use maintains the watch in optimal condition and prevents unexpected failure.

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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only