Archimede · Klassik

Strap for Klassik 39 Stainless Steel / Silver / Black 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 diameter39 mm
ReferenceUA7969-A3.3
FamilyKlassik
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 Klassik UA7969-A3.3

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Klassik UA7969-A3.3, seen from the bench

The Klassik UA7969-A3.3 is a 39mm stainless steel watch embodying Archimede's design philosophy of constructive purism and classical proportions. It features a Sellita caliber SW200-1 movement, a refined Swiss mechanical base with regulated balance and hairspring. The satin-finished steel case has a cylindrical construction with restrained proportions suited for medium to large wrists. The 20mm lug width represents the geometric balance between visual presence and strap versatility, accommodating quality leather straps without compromise.

Frequently asked questions

What is the lug width of the Archimede Klassik UA7969-A3.3?

The lug width is 20mm, measured correctly from the internal extremities of the spring bar pins. This width represents Archimede's intentional proportional compromise to maintain visual balance on the 39mm case. Any 20mm strap installs without mechanical adaptation.

Which strap pairs best with the Klassik UA7969-A3.3?

To enhance the minimalist construction philosophy, we recommend dark brown alligator or burgundy shell cordovan: both develop natural patina over time, creating tactile history that dialogues with the case's rigorous geometry. For daily wear, vegetable-tanned calf leather offers robustness and harmonious ageing.

How do you change the strap on the Archimede Klassik UA7969-A3.3?

The Klassik features fixed lugs without integrated spring bars. Strap change requires a dedicated tool (spring bar tool) to compress the springs and extract them laterally from the pins. Delicate operation: we recommend entrusting a specialist workshop for the first time, or consulting specific video tutorials. Avoid hammers or brute force that damage case finishing.

Are aftermarket straps available compatible with reference UA7969-A3.3?

Yes. Any strap with 20mm lug width is compatible. Milanostraps offers a dedicated collection at this width: artisanal leather, NATO, technical rubber, all ready for dispatch and customisable. Compatibility is guaranteed by international standardisation.

How long does a leather strap last on an Archimede Klassik?

A high-quality leather strap (alligator, shell cordovan, vegetable-tanned calf) has an average lifespan of 3-5 years with daily wear, extendable to 7-10 years with regular maintenance: periodic hydration, gentle cleaning, air drying. Patina becomes more beautiful with ageing, not compromising functionality. Rotating between multiple straps significantly extends useful life.

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