Strap for Navitimer 1 B01 Chronograph 46 Stainless Steel / Red Gold / Black / Croco / Pin

The lug width of the Navitimer UB0127211B1P1 is 24 millimetres. This dimension is a specific characteristic of this model and must be respected when selecting a strap to ensure mechanical compatibility and aesthetic proportion with the 46-millimetre case.

Alligator represents the finest choice for this model: the tight grain and natural texture emphasise the elegance of the bi-metallic case, whilst the durability of the leather ensures longevity. Box calf and shell cordovan offer compelling alternatives, with patina that evolves over time, transforming the watch into an increasingly distinctive object.

Strap replacement requires extraction of the lug bar using a specialised tool: position the watch on a dedicated holder, locate the small release hole at the lug, use a spring bar tool to gently push the bar towards the hole until it emerges completely. Align the new strap with the lug holes and reinsert the bar until it locks securely. If inexperienced, the Casati Milano atelier provides precision without risk.

Yes, any strap with a 24-millimetre lug width is mechanically compatible. Milano Straps are manufactured specifically for this dimension, guaranteeing complete compatibility. Ensure the strap is constructed from watchmaking-grade leather and robust finishing to prevent premature wear or structural failure.

Leather strap longevity depends on intensity of use, environmental conditions, and material quality. A high-grade alligator or box calf strap maintains structural integrity between 2 and 5 years with moderate daily wear. Shell cordovan, owing to its exceptionally dense structure, may exceed 8 years. Exposure to moisture, direct heat, and mechanical abrasion significantly reduces longevity.