Hamilton · Jazzmaster

Strap for Jazzmaster Auto 40 Stainless Steel / Black / Bracelet

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

Lug width20 mm
Case diameter40 mm
ReferenceH32475130
FamilyJazzmaster
MovementHamilton caliber H-10 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 H32475130

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Jazzmaster H32475130, seen from the bench

The Jazzmaster features the automatic caliber H-10 developed by Hamilton with hour, minute, second and date functions. The case is fitted with standard 20mm lugs. The H-10 movement offers an extended power reserve compared to the brand's traditional calibers.

Frequently asked questions

What is the lug width of the Hamilton Jazzmaster H32475130?

The lug width of the Hamilton Jazzmaster H32475130 is 20mm. This measurement is taken internally from one lug to the other and requires a strap specifically manufactured for this width. A strap of any other dimension will not be compatible with the case lugs.

Which strap is best suited for the Hamilton Jazzmaster H32475130?

The Jazzmaster H32475130 pairs excellently with alligator leather straps featuring vegetable tanning (cognac or bordeaux colours), shell cordovan, vitello with aged patina, navy or black nylon NATO straps, and black butadiene rubber. Your choice depends on usage: leather for formal occasions, NATO for sportiness, rubber for absolute durability.

How do you change the strap on a Hamilton Jazzmaster timepiece?

To change the strap on your Jazzmaster H32475130, use a dedicated spring bar removal tool to extract the pins securing the strap to the lugs. Insert the tool into the lateral hole of the lug, apply gentle pressure to release the pin, and slide off the strap. Align the new 20mm strap with the lug holes, reinsert the pins carefully to avoid damaging the case.

Can I use a compatible aftermarket strap on my Hamilton Jazzmaster H32475130?

Absolutely. The Jazzmaster H32475130 is fully compatible with any artisanal strap manufactured for the 20mm lug width. A high-quality aftermarket strap, crafted from vegetable-tanned leather or other premium materials, often offers superior workmanship and customisation options compared to stock straps, allowing you to completely transform the watch's aesthetic character.

How long does a leather strap last on a timepiece like the Hamilton Jazzmaster H32475130?

An artisanal leather strap of quality, when worn daily with appropriate care, typically lasts 2-3 years before requiring replacement. Durability depends on tanning method (vegetable vs industrial), material (alligator and shell cordovan outlast calf leather), exposure to water and humidity, and maintenance practices. Protecting the strap from excessive moisture and exposing it to sunlight periodically will extend its usable life significantly.

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