Strap for Modello Quattro U4S-KNT Kiton

The lug width of the U4S-KNT is 22mm. This dimension represents the distance between the inner margins of each lug and is essential for aftermarket strap compatibility. Verify this measurement using a calliper or millimetre ruler before purchasing a replacement strap.

As a minimalist Italian tool watch, the ideal strap depends on intended use. For formal contexts we recommend alligator in cognac or hazelnut tones. For refined daily wear, vegetable-tanned Tuscan calf leather will develop authentic patina over time. For aquatic sport or outdoor environments, canvas NATO or vulcanised rubber. All must be 22mm width.

Strap replacement requires a spring bar tool. Position the watch securely, press the small button on the spring bar mechanism to release tension, and extract the pin. Align the new strap's holes with the lugs, then reinsert the spring bar until it locks. If you lack the tool, Casati Milano offers replacement service by appointment at the atelier.

Yes, provided the lug width is precisely 22mm. Milano Straps supplies pre-calibrated straps in leather, rubber and NATO at this exact specification. All our straps are tested for mechanical and aesthetic compatibility with 40mm watches of this lug width.

A vegetable-tanned Tuscan calf strap, under daily use with basic maintenance (avoid prolonged moisture, keep away from direct heat sources), maintains structural integrity for 3-5 years before replacement becomes necessary. Alligator, being more resilient, easily exceeds 5-7 years. Vulcanised rubber remains virtually inert, preserving elastic properties for 8+ years.