Archimede · Sporttaucher

Strap for SportTaucher Stainless Steel / Black / Rubber

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
ReferenceUA8974-TS-A1.2
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 UA8974-TS-A1.2

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Sporttaucher UA8974-TS-A1.2, seen from the bench

The Archimede Sporttaucher reference UA8974-TS-A1.2 is a diver's watch equipped with the automatic Sellita SW200-1 movement. The caliber offers hour, minute, second and date indication. The watch features 20mm lugs for the strap.

Frequently asked questions

What is the lug width of the Archimede Sporttaucher UA8974-TS-A1.2?

The lug width of the Sporttaucher UA8974-TS-A1.2 is 20 mm, a mid-range standard that accommodates medium-thickness straps (1.2–1.5 mm) without creating gaps between case and material. Correct measurement is performed with a digital calliper positioned between the two horizontal pins of the case.

Which strap is best suited for the Archimede Sporttaucher UA8974-TS-A1.2?

Vegetable-tanned Tuscan leather in dark brown or cognac tones represents the classic choice, enhancing the natural patina that develops over time. For greater formal versatility, alligator in black or brown conveys elegance. For aquatic environments, rubber or NATO straps ensure maximum moisture and chlorine resistance.

How do I change the strap on the Archimede Sporttaucher UA8974-TS-A1.2?

To change the strap, extract the horizontal pins (spring bars) that connect the case to the current strap. Use a dedicated tool or small flat-head screwdriver to gently push the pin's retaining mechanism and free it from the lug. Insert the new strap by aligning the lug with the holes and reposition the pins until they snap into place.

Is an aftermarket strap compatible with the Sporttaucher UA8974-TS-A1.2?

Yes, any strap with a 20 mm lug width is compatible with the Sporttaucher UA8974-TS-A1.2. Ensure the measurement is between 19.8 and 20.2 mm to avoid forcing. MilanoStraps offers a comprehensive collection of handcrafted straps in leather, alligator, rubber and fabric specifically made for this size.

How long does a leather strap last on the Archimede Sporttaucher UA8974-TS-A1.2?

The lifespan of a leather strap depends on tanning method, usage and climatic conditions. A vegetable-tanned leather of quality, with regular maintenance and protection from excessive moisture, lasts 3–5 years. Alligator or shell cordovan straps offer superior longevity (5–7 years) due to fibre structure density. Rubber or NATO straps, being synthetic, maintain unvarying performance for 5–10 years if protected from continuous direct sunlight.

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