Strap for Navitimer B12 Chronograph 41 Cosmonaute Red Gold / Green

The Breitling Navitimer RB12302A1L1P1 features a lug width of 22mm. This is the standard measurement for the 41mm Navitimer family and determines aftermarket strap compatibility. The taper at the buckle end is typically 20mm.

For the Red Gold variant, a Mississippi alligator strap with a glossy or semi-glossy finish, or a vegetable-tanned Tuscan calf leather strap, are the most aesthetically coherent choices. The rectangular grain of alligator complements the lustre of red gold, whilst calf leather develops a patina over time that enhances the character of the precious case material.

The strap is removed using a 0.9mm spring bar tool inserted into the lateral slot of the lug. The Navitimer uses standard spring bars; it is advisable to work on a soft cushion to protect the Red Gold case. The operation takes approximately two minutes and requires no technical assistance.

Yes, the 22mm lug width of the Navitimer RB12302A1L1P1 is compatible with a wide range of aftermarket straps. It is important to select straps with slightly curved or flexible ends to conform to the lug profile. Milano Straps offers several leather, NATO and rubber models specifically curated for this lug size.

A quality leather strap — vegetable-tanned or alligator — typically lasts between 2 and 4 years with daily wear, and up to 6 to 8 years when rotated with other straps. Longevity depends largely on exposure to perspiration and moisture. It is advisable to avoid prolonged contact with water and to apply a natural leather conditioner periodically.