Hamilton · Jazzmaster

Strap for Jazzmaster Viewmatic 37mm Black Dial PVD Gold

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
ReferenceH32445585
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 H32445585

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Jazzmaster H32445585, seen from the bench

The Hamilton Jazzmaster H32445585 is a refined Swiss timepiece from Bienne with a 37 mm stainless steel case and black dial. It features the ETA 2824-2 automatic movement with date window at 3 o'clock. The 18 mm lug width is standard for this model and essential for compatible replacement straps. With its clean design and everyday wearability, the Jazzmaster represents contemporary Swiss watchmaking tradition.

Frequently asked questions

What is the exact lug width of the Hamilton Jazzmaster H32445585?

The lug width of the Hamilton Jazzmaster H32445585 is precisely 18 mm. This standardised measurement represents the exact distance between the case lugs where the strap attaches. It is essential to verify this measurement before purchasing an aftermarket strap, as even minor variations would compromise the perfect fit with the case.

What is the best strap for the Hamilton Jazzmaster H32445585?

The optimal choice depends on intended use and personal preference. For formal elegance, an alligator or shell cordovan strap in dark brown or black is recommended. For daily versatility, vegetable-tanned calf leather offers softness and natural ageing characteristics. For sports or summer use, a cotton NATO or FKM rubber strap maintains the Jazzmaster's minimalist aesthetic whilst ensuring practicality.

How do you change the strap on a Hamilton Jazzmaster?

Strap replacement requires a spring bar tool and careful handling of the case. Position the watch on a soft surface, locate the small spiral springs securing the strap to the case lugs, and gently compress the spring with the tool whilst extracting the strap. Repeat on the opposite side. Installation of the new strap follows the reverse procedure: align the lugs with the terminals and ensure the springs click into position. If uncertain, consult a specialist service.

Is an 18 mm aftermarket strap compatible with the Hamilton Jazzmaster H32445585?

Yes, any quality strap manufactured to 18 mm lug width is fully compatible with the H32445585. However, it is important to verify that the strap is constructed to tight tolerances: the lugs must adhere completely to the terminals without lateral gaps, ensuring a symmetrical and professional appearance. Leather, NATO and rubber straps are all valid options provided they respect the 18 mm dimension.

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

The lifespan of a leather strap depends on material quality, intensity of use and maintenance. A high-quality alligator or shell cordovan strap can maintain structural integrity for 3-5 years of daily wear. Vegetable-tanned calf leather has a similar lifespan, although vegetable leather tends to develop flexibility and visible patina within 12-18 months. The inner lining wears more rapidly than the leather itself: after 2-3 years, a strap restoration (renewal of lining and gentle refinishing) can extend useful life by another 2-3 years.

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