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

The lug width (misura ansa) of the Breitling Navitimer AB031021/BF77/441X/A20BA.1 is 24mm. This measurement is taken perpendicular to the case between the two attachment points where the strap fastens. It is a critical dimension to ensure the strap fits perfectly without unwanted play.

For the Navitimer AB031021, natural alligator represents the most authentic choice, thanks to its geometric grain that mirrors the technical structure of the bezel and dial. Vegetable-tanned calf leather offers a patina that evolves over time. NATO straps maintain the instrumental and aviatory DNA. Structured rubber is ideal for frequent flight operations, ensuring practicality and quick changes.

To change the strap, you need a specific tool for the spring bars (the small pins that lock the strap to the case attachments). Unscrew the crown stem, insert the tool pins into the release holes, push inward to free the old strap, and insert the new one. It is advisable to seek support from an authorised centre if you do not have the appropriate tool.

Yes, a quality aftermarket strap handcrafted by specialised manufacturers is perfectly compatible with the Navitimer AB031021/BF77/441X/A20BA.1, provided the lug width is exactly 24mm and the spring bars are the correct length. Straps in alligator, vegetable-tanned calf, or technical rubber guarantee both compatibility and superior durability.

A quality natural leather strap, such as alligator or vegetable-tanned calf, has an average lifespan of 5–7 years with daily wear, depending on sun exposure, humidity, and frequency of use. Vegetable tanning tends to develop a protective patina that increases longevity. Casati Milano guarantees 18 months on bespoke straps, with the possibility of skin regeneration over time.