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Hamilton · Jazzmaster

Strap for Jazzmaster Open Heart 42 Stainless Steel / Blue / Bracelet

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
ReferenceH32705142
FamilyJazzmaster
MovementHamilton caliber H-10-S hours, minutes, seconds | skeleton
Year2020
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 H32705142

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Jazzmaster H32705142, seen from the bench

The Hamilton Jazzmaster features the automatic H-10-S caliber with a skeletonized dial displaying hours, minutes and seconds. The case is equipped with 22mm lugs. The movement offers an extended power reserve compared to the brand's standard calibers.

Frequently asked questions

What is the lug width of the Hamilton Jazzmaster H32705142?

The Hamilton Jazzmaster H32705142 features a 22mm lug width. This measurement is standard across most Jazzmaster variants and is essential when selecting compatible aftermarket straps.

What is the best strap for the Hamilton Jazzmaster H32705142?

We recommend leather straps made from vegetable-tanned Tuscan leather, particularly in cognac or dark brown finishes. Vegetable-tanned leather provides natural rigidity that visually balances the 42mm case, whilst NATO straps are ideal for summer or sports-oriented wear.

How do I change the strap on my Hamilton Jazzmaster H32705142?

The strap is replaced by removing the straight spring bars at the ansa ends. Simply use a dedicated spring bar tool to compress the spring mechanism and slide it laterally. We recommend working on a soft surface to prevent accidental case scratches.

Which aftermarket straps are compatible with the Hamilton Jazzmaster H32705142?

All straps with a 22mm lug width are compatible with the Jazzmaster H32705142. Milano Straps offers a curated selection of straps in Tuscan leather, shell cordovan, alligator, NATO, and waterproof rubber – all available in the correct width specification.

How long does a leather strap last on the Hamilton Jazzmaster H32705142?

A naturally vegetable-tanned leather strap typically lasts 3-5 years with daily wear. Longevity depends on leather quality, climate conditions, and maintenance practices. Rubber and NATO straps offer superior durability, making them ideal for humid climates or sports activities.

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