Archimede · Deckwatch

Strap for DeckWatch Bronze / Silver / Brown Leather

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
ReferenceUA7929-H1.2-BR
FamilyDeckwatch
MovementETA caliber 6498-1 hours, minutes, small seconds
CaseBronze, Stainless 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 Deckwatch UA7929-H1.2-BR

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Deckwatch UA7929-H1.2-BR, seen from the bench

The Archimede Deckwatch UA7929-H1.2-BR is a navigation chronometer inspired by German maritime tradition. The 42mm case is crafted in bronze and stainless steel, featuring the ETA caliber 6498-1 manual-wind movement with visible caseback and small seconds. The dial displays hours, minutes, and seconds without graphic distractions. The 20mm lug width is a deliberate design choice for proportional harmony on the 42mm case. A compatible leather or fabric strap in vegetable-tanned alligator, Hermès calf, or heavy-duty NATO offers both aesthetic coherence and functional durability.

Frequently asked questions

What is the exact lug width of the Archimede Deckwatch UA7929-H1.2-BR?

The lug width is 20mm. This measurement is taken between the two lugs protruding from the case sides. It is essential to verify this measurement before purchasing a replacement strap, as 20mm is not a widely distributed standard in the market.

Which strap is best suited for the Archimede Deckwatch UA7929-H1.2-BR?

A vegetable-tanned leather strap is the ideal choice, particularly alligator or pull-up calf that ages naturally over time. For those preferring practicality, a NATO strap in heavy fabric or an FKM rubber option provides water resistance whilst maintaining the austere aesthetic of the Deckwatch.

How do you change the strap on an Archimede Deckwatch UA7929-H1.2-BR?

The strap is changed by removing the spring bars through the hole on the side of the case. Two tools are required: a thin lever (spring bar tool) to lift the bar from inside the lug, and tweezers to gently extract the bar itself. The procedure requires patience and care to avoid scratching the bronze case.

Are aftermarket 20mm straps compatible with the Deckwatch UA7929-H1.2-BR?

Yes, any strap manufactured with a 20mm lug width is compatible, provided the ends are correctly profiled to fit between the lugs. On milanostraps.it you will find a collection of artisanal straps for this specific lug width, tested and ready for use.

How long does a leather strap last on an Archimede Deckwatch UA7929-H1.2-BR?

A quality leather strap with vegetable tanning can last 5 to 10 years of daily wear before requiring replacement. Longevity depends on environmental humidity, frequency of sun exposure, and how much the strap is subjected to twisting during wear. With regular maintenance and water protection, durability increases considerably.

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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only