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Archimede · Klassik

Strap for Klassik 42 TwoTone Stainless Steel / PVD / Black / Black Leather

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

20mm
20 mm strapsAll Archimede
Lug width20 mm
Case diameter42 mm
ReferenceUA7929-A2.1-SW
FamilyKlassik
MovementMiyota caliber 9015 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

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Straps for the Klassik UA7929-A2.1-SW

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Klassik UA7929-A2.1-SW, seen from the bench

The Archimede Klassik UA7929-A2.1-SW is a 42mm stainless steel 316L watch embodying rigorous German design principles without superfluous ornamentation. It features a Miyota 9015 quartz movement with date function and a minimalist dial with white indices on dark background. The watch has a 20mm lug width and integrated screw-down crown, representing functional watchmaking where substance prevails over appearance.

Frequently asked questions

What is the lug width of the Archimede Klassik UA7929-A2.1-SW?

The Archimede Klassik UA7929-A2.1-SW features <a href="/pages/termine-glossario/misura-ansa">20mm lug width</a> (anse). This dimension is standard for the model and accommodates straps or bracelets of equal 20mm width. Always verify compatibility before purchasing by measuring the internal distance between the lug horns.

Which strap pairs best with the Archimede Klassik?

Given the austere design of this timepiece, a strap in <a href="/pages/termine-glossario/concia-vegetale">vegetable-tanned leather</a> in tobacco brown or ebony black is recommended, or alternatively an <a href="/pages/termine-glossario/alligatore">alligator leather strap</a> for formal occasions. A striped NATO strap maintains its field-watch character. The choice depends on intended use: tailored wear requires premium leather; functional use accommodates rubber or technical fabric.

How do I change the strap on my Archimede Klassik UA7929-A2.1-SW?

Strap replacement requires a spring bar tool. Place the watch on a flat surface, insert the tool's tip into the spring bar slot, gently lift until the pin exits its seat, then withdraw the strap. Reverse the procedure to install the new 20mm strap. If unfamiliar with the procedure, consult a specialist watchmaker or Atelier Casati Milano for professional installation.

Is the Archimede Klassik UA7929-A2.1-SW compatible with aftermarket 20mm straps?

Yes, the UA7929-A2.1-SW model accepts all aftermarket 20mm straps from certified manufacturers, provided they meet international standard specifications. MilanoStraps curates a selection of leather, NATO, rubber and fabric straps all certified for 20mm <a href="/pages/termine-glossario/misura-ansa">lug width</a>. We recommend verifying leather thickness (for such a shallow case, 1.4–1.8mm is optimal) and whether a <a href="/pages/termine-glossario/deployante">deployant clasp</a> or bar is preferred.

What is the lifespan of a leather strap on an Archimede Klassik?

Leather strap longevity depends on daily wear, climate exposure, and maintenance. A <a href="/pages/termine-glossario/shell-cordovan">shell cordovan</a> or premium vegetable-tanned leather strap, worn intermittently and treated with leather balm every six months, lasts 5–7 years on average. Budget leather typically lasts 2–3 years. Rubber and NATO straps vary (3–5 years) but resist moisture better. MilanoStraps recommends rotating between straps to extend the life of each.

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