Strap for Navitimer Automatic 36 Stainless Steel / MOP / Bracelet / UK

The Breitling Navitimer A17327211A1A1 has a lug width of 18mm. This measurement is taken internally between the two lugs of the case using a digital calliper, and it determines the correct strap width. It should not be confused with the case diameter, which is 36mm.

The most suitable materials for the Navitimer A17327211A1A1 are square-grain alligator in black or tobacco for formal wear, vegetable-tanned calfskin for everyday use with natural patina development, and nylon NATO straps to echo the model's aeronautical heritage. The final choice depends on context of use and personal style.

The strap is removed using a spring bar tool, which compresses the spring bars housed within the case lugs. Care must be taken not to scratch the steel case: it is advisable to protect the case with a soft cloth and work under adequate lighting. Alternatively, any qualified watchmaker can perform the swap in a matter of minutes.

Yes, all straps with an 18mm attachment and a tip profile compatible with the Navitimer lug geometry are aftermarket compatible. Milano Straps offers a curated selection of handcrafted 18mm straps in various materials and finishes, with full customisation available through the Casati Milano atelier.

Longevity depends on leather type and frequency of use. A quality vegetable-tanned calfskin strap, regularly conditioned with a leather cream, maintains structural integrity for 2–4 years of daily wear. Certified alligator and shell cordovan offer superior durability, potentially lasting 5–8 years when properly maintained and kept away from prolonged exposure to water and perspiration.