Hamilton · Jazzmaster

Strap for Jazzmaster Thinline Small Second Quartz

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
ReferenceH38441583
FamilyJazzmaster
MovementETA caliber 980.163 hours, minutes, small 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 H38441583

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Jazzmaster H38441583, seen from the bench

The Hamilton Jazzmaster H38441583 is a 40mm stainless steel timepiece from the classic Jazzmaster line, featuring an ETA caliber 980.163 automatic movement and a 20mm lug width. The satin-finished steel case with brushed surfaces and chrome details is water-resistant to 50 meters, designed for both formal and everyday wear with an essential dial free from complications.

Frequently asked questions

What is the lug width of the Hamilton Jazzmaster H38441583?

The Hamilton Jazzmaster H38441583 features a lug width of exactly 20mm, a precise dimension that requires purpose-built straps. This specification is unique to this model and differs from the more common 18mm or 22mm standards. To verify compatibility with your strap, measure the distance between the two lugs by positioning a ruler perpendicular to the case, measuring from inner edge to inner edge.

Which strap do you recommend for the Jazzmaster H38441583?

For the Hamilton Jazzmaster H38441583, we recommend an alligator strap with French vegetable tanning in brown or black, or a calf leather with plant-based tanning that develops patina over time. Those preferring practicality may opt for a sturdy canvas NATO or structured rubber. Your choice should reflect your intended use: formal occasions favour alligator, versatility calls for calf, whilst sports activities suit NATO or rubber.

How do I change the strap on the Hamilton Jazzmaster H38441583?

Changing the strap on the Jazzmaster H38441583 requires a spring bar tool or small curved tweezers. Position the watch face down, locate the elastic pins connecting the lugs to the strap ends on either side of the case, apply gentle pressure toward the case centre to compress the pin and slide the old strap outward. Reverse the process with your new strap, ensuring the pin seats correctly in its designated holes.

Are compatible aftermarket straps available for the H38441583 model?

Yes, the Hamilton Jazzmaster H38441583 accepts aftermarket straps of 20mm lug width. We recommend selecting artisanally constructed options from specialised partners who guarantee build quality and certified materials. Always verify that your strap has been accurately measured to prevent lug misalignment relative to the case.

What is the lifespan of a leather strap on a Hamilton Jazzmaster?

Strap longevity depends on tanning method and material composition. An alligator strap with French vegetable tanning or calf leather with plant-based tanning maintains structural integrity for 4–6 years under daily wear, developing aesthetic patina over time. In high-humidity conditions or with frequent direct water exposure, durability decreases. Regular maintenance—drying after water contact and periodic conditioning—significantly extends strap lifespan.

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