Strap for Navitimer B01 Chronograph 41 Stainless Steel / MOP Japan / Bracelet

The Breitling Navitimer AB0139211A1A1 has a standard lug width of 22mm. This measurement is taken by inserting a calliper between the two horizontal lugs of the case: the internal distance is uniform on both sides and accepts any strap with a 22mm attachment, typically tapering to 20mm at the buckle end.

For the Navitimer AB0139211A1A1, the most suitable materials in keeping with the model's technical and aeronautical character are vegetable-tanned calf leather with a matte finish, matte alligator for greater presence, and nylon NATO for a more sporting interpretation. Shell cordovan is recommended for formal occasions. A taper to 20mm is advised for correct proportions on the wrist.

To replace the strap on the Navitimer AB0139211A1A1, a spring bar tool or dedicated lever-tip screwdriver is required. By acting on the spring bars housed in the 22mm lugs, the original strap is removed and the new one fitted by compressing the spring bars into the lug holes. Care should be taken to avoid scratching the stainless steel case; it is advisable to protect the lugs with low-tack adhesive tape during the operation.

Yes. Any strap with a 22mm attachment and a 20mm taper is compatible with the Navitimer AB0139211A1A1. Milano Straps offers a selection of handcrafted straps in leather, alligator, shell cordovan and rubber, specifically sized for this lug width, with a personalisation option available at the Casati Milano atelier.

The longevity of a leather strap depends on material quality and conditions of use. A quality vegetable-tanned calf leather strap, worn daily under moderate conditions and without prolonged exposure to perspiration or water, will typically last between 18 and 36 months. Alligator and shell cordovan, due to their denser fibre structure, generally offer greater durability. Milano Straps products carry an 18-month guarantee against manufacturing defects.