Archimede · Sporttaucher

Strap for SportTaucher 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 diameter42 mm
ReferenceUA8974B-TS-A1.1
FamilySporttaucher
MovementSellita caliber SW200-1 a 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 Sporttaucher UA8974B-TS-A1.1

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Sporttaucher UA8974B-TS-A1.1, seen from the bench

The Archimede Sporttaucher reference UA8974B-TS-A1.1 is a dive watch equipped with an automatic Sellita caliber SW200-1 movement. The mechanism indicates hours, minutes, seconds, and date. The watch features 20mm lugs for the strap.

Frequently asked questions

What is the lug width of the Archimede Sporttaucher UA8974B-TS-A1.1?

The lug width is 20 mm, a standard specification for contemporary dive watches. This measurement ensures compatibility with the vast majority of aftermarket straps without requiring adapters, facilitating seamless transitions between leather, NATO, and rubber materials.

Which strap type is best suited for the Archimede Sporttaucher UA8974B-TS-A1.1?

We recommend three principal options: structured alligator for formal wear, vegetable-tanned calf leather for natural patina development over time, or nylon NATO for diving and intensive daily use. The satin-finished steel case pairs elegantly with FKM rubber for aquatic sports applications.

How do I change the strap on this model?

The Sporttaucher UA8974B-TS-A1.1 features standard 20 mm lugs. Remove the existing strap by extracting the spring bars with the dedicated tool from the opposite side of the case; align the new strap and reinsert the bars until the locking click is audible. This operation is fully reversible without case damage.

Can I use an aftermarket strap on this watch?

Yes, any strap featuring 20 mm lugs is entirely compatible. MilanoStraps selections are curated for optimal proportions on 41.50 mm cases, avoiding mass excess that would compromise the diver's ergonomics.

What is the expected lifespan of a leather strap on a sport watch like this?

A quality leather strap subjected to regular mechanical stress (diving, sporting activity) typically exhibits a lifespan of 18–36 months with conscious use. Vegetable-tanned materials require periodic balm conditioning; alligator leather demonstrates extended durability when protected from excessive moisture exposure.

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