Strap for Breitling Chronomat Automatic GMT 40 NFL Seattle Seahawks Edition

The lug width of the Breitling Chronomat 40 GMT (ref. A32398D41C1A1) is 20mm. This measurement refers to the internal distance between the two lugs of the case, i.e. the exact point where the strap is fitted. For precise verification, the use of a digital calliper is recommended.

The choice depends on the context of use. For formal or business settings, vegetable-tanned alligator leather with a matte finish is the most coherent option given the technical-elegant character of the Chronomat. For everyday versatile use, Tuscan calf leather that develops a patina over time offers growing personality. For sport and travel, a premium nylon NATO or vulcanised rubber strap provides durability and practicality.

The strap on the Chronomat 40 GMT is replaced using a springbar tool, a forked-tip instrument that compresses the spring bars housed within the lugs. Insert the tip into the lateral recess of the lug, compress the spring bar, and slide the strap outwards. Care should be taken to avoid scratching the stainless steel case: it is advisable to protect the surface with a soft cloth during the operation.

Yes. Any strap with a 20mm attachment is compatible with the Breitling Chronomat 40 GMT (ref. A32398D41C1A1), provided it uses standard spring bars. Milanostraps.it offers a selection of handcrafted leather, nylon and rubber straps specifically for 20mm lug width, made with carefully selected materials and hand-finished. Build quality is comparable to or superior to the original factory strap.

The longevity of a leather strap depends on the material, care and frequency of use. A vegetable-tanned Tuscan calf strap, maintained periodically with neutral leather cream, retains structural and aesthetic integrity for 3 to 5 years of regular use. High-quality alligator leather, being denser and more compact, can exceed 5 to 7 years. Prolonged exposure to perspiration, water and direct sunlight accelerates deterioration: it is advisable to rotate straps and store them away from heat sources.