Breitling
Chronomat 40 GMT A323986A1C1A1— lug 20mm
Breitling Chronomat 40 GMT A323986A1C1A1: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 20mm lug width to preserve the original sartorial balance."
Technical Specifications
Breitling A323986A1C1A1The essential strap measurement.
Browse 20mm straps →A323986A1C1A1
Breitling caliber Caliber 32 Hours, Minutes, Seconds, Additional 24 Hour Hand (adjustable) | Date
The Heritage
Compatible Straps
Selected for the 20mm lug width of the Chronomat 40 GMT
FAQ
What is the lug width of the Breitling Chronomat 40 GMT A323986A1C1A1?
The lug width of the Breitling Chronomat 40 GMT (ref. A323986A1C1A1) is 20 mm. This measurement should be taken with a millimetre calliper at the inner distance between the two lugs, at the strap attachment point. The standard taper at the buckle end is typically 18 mm.
What is the best strap for the Breitling Chronomat 40 GMT?
The most suitable options for the Chronomat 40 GMT are: alligator leather with vegetable tanning for a formal register with natural grain texture, smooth or padded calfskin for visual continuity with the stainless steel case, vulcanised rubber for active and sporting use, and dense nylon NATO for maximum everyday versatility. A stainless steel deployant clasp is recommended for security and aesthetic consistency with the case.
How do you change the strap on a Breitling Chronomat 40 GMT?
The strap is replaced via the spring bars connecting it to the case lugs. Using a fork-tipped spring bar tool, compress the spring bar, release the strap, and fit the new one. It is advisable to work on a soft surface to protect the case from accidental scratches. If in doubt, a watchmaker or the Casati Milano service can perform the swap professionally.
Are there aftermarket straps compatible with the Breitling Chronomat 40 GMT?
Yes. Any strap with a 20 mm attachment width and standard spring bars is compatible with the Breitling Chronomat 40 GMT. Milanostraps.it offers a selection of handcrafted 20 mm straps in alligator, calfskin, shell cordovan, rubber and NATO, produced with premium materials and finishes befitting a timepiece of this calibre.
How long does a leather strap last on a Breitling Chronomat 40 GMT?
Longevity depends on leather quality, tanning method and daily use. A high-quality vegetable-tanned alligator strap, properly maintained — kept away from water and occasionally treated with a neutral leather conditioner — can last between 3 and 6 years whilst retaining its appearance and function. Calfskin typically has a shorter lifespan of around 2 to 3 years with regular use. Casati Milano straps carry an 18-month warranty against manufacturing defects.