Strap for Navitimer Rattrapante Stainless Steel / Black / Calf / Folding

The lug width of the Breitling Navitimer AB031021/BF77/440X/A20D.1 is 24mm. This is the measurement required to select any compatible aftermarket strap. To verify it, measure the internal distance between the two lug pillars using a millimetre ruler.

For a 45mm Navitimer with rattrapante movement, a Louisiana alligator strap is the most coherent choice given the model's aeronautical heritage: the natural grain complements the visual complexity of the dial. Alternatively, a vegetable-tanned calf strap develops a distinctive patina over time, whilst vulcanised rubber is preferable for intensive sporting use. In all cases, a deployant clasp is recommended for maximum stability on the wrist.

The Navitimer strap is replaced using standard 24mm spring bars. A fine-tipped spring bar tool is sufficient: insert the tip into the lateral slot of the spring bar, compress it and slide the strap free. The operation requires no specialist tools and can be carried out independently with care, avoiding excessive pressure on the case. It is advisable to work on a soft surface to protect the bezel.

Yes. Any strap with a 24mm lug width and standard spring bars is technically compatible with the Breitling Navitimer AB031021/BF77/440X/A20D.1. Milano Straps offers a selection of handcrafted straps in leather, rubber and nylon specifically available in the 24mm size, made with carefully selected materials and hand-stitched finishing. Dimensional compatibility is guaranteed; aesthetic choice depends on the dial pairing and intended use.

The lifespan of a leather strap depends on the material, care and frequency of use. A quality calf leather strap, with regular use and proper maintenance (periodic conditioning, drying after moisture exposure), typically lasts 18 to 36 months. Alligator leather, being denser and more compact, tends to last longer. Casati Milano straps carry an 18-month warranty against manufacturing defects. Use of leather straps during intensive sporting activities or in conditions of heavy perspiration is not recommended.