Strap for Navitimer Automatic 36 Stainless Steel - Red Gold / MOP / Alligator

The Breitling Navitimer U17327211A1P1 has a lug width of 18mm. This measurement refers to the internal distance between the two lugs on the case — in other words, the strap attachment width. It is the key parameter when selecting a compatible strap: any strap with an 18mm attachment width will fit this model correctly.

For the Navitimer U17327211A1P1, with its red gold and steel case and mother-of-pearl dial, the most suitable materials are vegetable-tanned alligator in cognac or bordeaux tones — which complement the red gold — or shell cordovan in burgundy or anthracite, whose dense texture echoes the grain of the rotating bezel. For a sportier approach, a quality nylon NATO strap references the Navitimer's original aviation brief.

To replace the strap on the Navitimer U17327211A1P1, you will need a spring bar tool to remove the two 18mm spring bars securing the strap to the lugs. Care is required to avoid scratching the two-tone case: protect the bezel with surgical tape and work on a soft surface. If you prefer to avoid any risk, any watchmaker — or the Casati Milano atelier — can perform the swap in a matter of minutes.

Yes, the Breitling Navitimer U17327211A1P1 uses standard 18mm spring bars, making it compatible with any aftermarket strap with an 18mm attachment width. Milano Straps offers a curated selection of handcrafted 18mm straps in alligator, calf leather, shell cordovan and nylon, with finishes and thicknesses suited to a watch of this calibre. Dimensional compatibility is guaranteed; the choice of material and clasp depends on intended use and personal style.

The lifespan of a leather strap depends on the material, tanning process and frequency of use. A quality vegetable-tanned alligator strap, worn daily with moderate activity, will retain its structure and finish for 3 to 5 years. Shell cordovan, thanks to the dense fibre of the horse cordovan, tends to last even longer, developing a distinctive patina over time. The primary enemy of leather is perspiration: avoid wearing the strap during intense physical activity and allow it to air between uses. Casati Milano offers an 18-month warranty against manufacturing defects on all bespoke straps.