Strap for Chronomat 40 GMT Qatar

The Breitling Chronomat 40 GMT A323983B1C1A1 features a lug width of 20mm. This measurement is taken internally between the two lugs at the strap attachment point and determines compatibility with any standard 20mm aftermarket strap.

For the Chronomat 40 GMT, vegetable-tanned alligator or smooth calf leather straps offer the most balanced combination of elegance and durability. For sport or aviation use, a vulcanised rubber strap or technical nylon NATO provides the necessary resistance and comfort. A deployant clasp is recommended to preserve the structure of leather straps.

The strap is removed using a fine-tipped spring bar tool or flat lever. Insert the tip into the lug channel and compress the spring bar to release the strap. Care should be taken not to scratch the stainless steel case; protecting the lug area with PTFE tape during the operation is advisable.

Yes. The 20mm lug width of the Chronomat 40 GMT is a widely adopted standard, ensuring broad compatibility with quality aftermarket straps. MilanoStraps offers a curated selection of handcrafted leather, rubber and textile straps specifically compatible with this model, available in the 20mm strap section of the website.

The lifespan of a leather strap depends on the material, frequency of use and maintenance. A quality vegetable-tanned alligator strap, with regular use and periodic conditioning with a leather cream, will retain its structural and aesthetic properties for 3 to 5 years. Shell cordovan, due to the density of its fibres, tends to last longer whilst developing a distinctive patina over time.