Strap for X-Series Stainless Steel / Black / NATO

The lug width of the X01-0901 is 20 millimetres. This measurement represents the space between the two case lugs and is essential for selecting compatible straps. To verify it, use a digital calliper and measure the exact internal distance between the two attachment points of the case: it must be precisely 20.00 mm. Variations of 0.5 mm would result in poor fit and potential damage when changing the strap.

The best strap depends on intended use. For formal contexts we recommend alligator or vegetable-tanned calf leather, which enhance the minimalist austerity of the case. For summer or sport use, a NATO strap in sage green or charcoal grey offers versatility and thermal comfort. For aquatic contexts, fluoroelastomer (FKM) rubber ensures maximum resistance to moisture and saltwater. Ideally, you should own at least two interchangeable options.

To change the strap you must remove the two spring bars that anchor the strap to the case lugs. Use a dedicated tool by inserting the small lever into the side slot of the bar, then gently lift to compress the internal spring. Once the bar is extracted, you can slide off the old strap. Repeat the inverse procedure to fit the new strap, ensuring the bars are fully inserted and locked. Avoid forcing: moderate and conscious pressure prevents damage.

Any strap with a 20 mm lug width is compatible with the X01-0901, regardless of material (leather, NATO, rubber, canvas). Compatibility depends solely on lug width, not on brand or quality. We recommend choosing straps from specialised artisans who guarantee dimensional accuracy and construction quality. milanostraps.it offers a curated selection of 20mm compatible straps, ready for dispatch and customisable upon request.

The lifespan of a leather strap depends on intensity of use, climate conditions and tanning quality. A vegetable-tanned leather strap of good quality typically lasts 3–5 years with moderate daily use. In very humid climates durability may reduce to 2–3 years; in dry climates it can extend beyond 5 years. Regular maintenance (gentle cleaning, application of specific conditioners) significantly prolongs the life of the strap. The patina that develops is a sign of desirable natural ageing, not deterioration.