Strap for Klassik 36 TwoTone / Silver / Brown Leather

The lug width of the Archimede Klassik UA4929-A3.32-EG5 is 18.00mm. This measurement is determined by the distance between the horizontal pins on the case where the strap is fitted. Do not confuse this with the width of the strap at its centre: the lug width must be exactly 18mm to ensure a perfect fit with the case lugs.

We recommend a strap in natural alligator or vegetable-tanned calf, which integrates harmoniously with the brushed stainless steel case and reinforces the minimalist Bauhaus character. A tobacco or cognac brown alligator strap creates classical visual hierarchy. NATO straps in navy blue offer versatility for those preferring practicality, whilst Fluoroelastomer rubber is ideal for seasonal changes.

To change the strap, you require a tool called a spring bar tool. Position the flat end of the tool on the access hole of the spring bar tension mechanism, push inward carefully and the pin will release from the case lugs. Remove the old strap, insert the new one by aligning the holes with the pins and apply pressure until you feel the spring lock into the corresponding holes. Work with care to avoid scratching the case.

Yes, any strap with a lug width compatible with 18mm can be fitted to the Archimede Klassik UA4929-A3.32-EG5. Milano Straps offers a specialised collection of artisan straps for this measurement: in alligator, shell cordovan, vegetable-tanned calf, NATO and rubber. Compatibility depends solely on the lug width, not on the watch brand. Verify that the strap is genuinely 18mm and not 19 or 17mm, as millimetre differences cause excessive play.

The durability of a leather strap depends on the tanning method, usage and environmental conditions. High-quality vegetable-tanned calf resists 3 to 5 years of daily wear, developing characteristic patina. A naturally-dyed alligator strap has similar longevity. Exposure to moisture, perspiration and direct sunlight accelerates ageing. Shell cordovan straps, if maintained, reach 7-10 years. We recommend periodic maintenance with neutral balms and storage in dry environments.