Hamilton · Jazzmaster

Strap for Jazzmaster Open Heart 40 Stainless Steel / Blue Gradient

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
ReferenceH32675540
FamilyJazzmaster
MovementHamilton caliber H-10 ND Hours, Minutes, Seconds
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 H32675540

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Jazzmaster H32675540, seen from the bench

The Hamilton Jazzmaster H32675540 is powered by the automatic H-10 caliber with hours, minutes and seconds indication. The watch features standard 20mm lugs for the strap. The H-10 movement offers an extended power reserve compared to base calibers.

Frequently asked questions

What is the exact lug width of the Hamilton Jazzmaster H32675540?

The lug width of the Hamilton Jazzmaster H32675540 is 20mm. This measurement represents the internal space between the two lugs of the case and is essential for selecting a compatible strap. It is important to verify this measurement accurately using a digital calliper, as variations of even 0.5mm can cause unwanted play or difficulty in strap insertion.

What type of strap is most suitable for the Hamilton Jazzmaster H32675540?

For the Jazzmaster H32675540 we recommend three main categories: alligator (for a dressy and formal look), vegetable-tanned calf leather (for elegance with natural patina), or NATO nylon (for sporty versatility). It depends on your use case: an alligator strap enhances the refined character of the Jazzmaster, whilst a NATO strap adds a casual and functional dimension ideal for everyday wear.

How do I properly change the strap on a Hamilton Jazzmaster?

To change the strap, you will need a spring bar tool (a dedicated instrument with two flat tips). Position the tip under the spring bar (the small metal spring that holds the strap to the lugs) on the opposite side from where you wish to remove the strap, press gently upward and push the strap outward. Repeat on the other side. To insert the new strap, align the holes with the lugs and use the spring bar tool to compress the spring, then slide the strap into position until the click locks into place.

Which aftermarket strap is compatible with the H32675540?

Any strap with a 20mm lug width is compatible with the H32675540. On milanostraps.it you will find a curated selection of artisanal leather straps (alligator, calf, shell cordovan), NATO fabric, and natural rubber. Each strap is available with a standard buckle or deployante, and can be customised in length to fit your wrist perfectly.

How long does a leather strap last on a watch like the H32675540?

The lifespan of a leather strap depends on use and care. A quality alligator or calf strap can last 3-5 years with daily use, up to 7-10 years with occasional use. Longevity increases if exposed to low humidity and protected from impact. A shell cordovan strap, thanks to its dense fibrous structure, can last even longer. We recommend drying the strap after exposure to water and storing it in environments with controlled humidity.

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