Breitling
Colt A1731311.BE90.428X— lug 20mm
Breitling Colt A1731311.BE90.428X: 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 A1731311.BE90.428XThe essential strap measurement.
Browse 20mm straps →A1731311.BE90.428X
Breitling caliber Caliber 17 Hours, Minutes, Seconds | Date
The Heritage
Compatible Straps
Selected for the 20mm lug width of the Colt
FAQ
What is the lug width of the Breitling Colt A1731311.BE90.428X?
The lug width of the Breitling Colt A1731311.BE90.428X is 20mm. This measurement should be taken internally between the two lugs using a digital calliper, at the base of the lug attachment, to ensure correct compatibility with any aftermarket strap.
What is the best strap for the Breitling Colt A1731311.BE90.428X?
The ideal strap depends on the intended use. For versatile daily wear, a vegetable-tanned calf leather strap in 20mm offers a balance of durability and refinement. For sport or aquatic use, vulcanised rubber is the most practical option. For formal pairings, smooth alligator in black or tobacco enhances the stainless steel case whilst respecting the instrument-oriented character of the watch.
How do you change the strap on a Breitling Colt A1731311.BE90.428X?
The strap is replaced using a dedicated springbar tool, inserting the tip into the lug slots to compress the ends of the spring bars. It is advisable to work on a soft surface to avoid scratching the case, and to ensure the replacement spring bars are the correct length for the 20mm lug width of the Colt.
Are there aftermarket straps compatible with the Breitling Colt A1731311.BE90.428X?
Yes. Any strap with a 20mm attachment is technically compatible with the Breitling Colt A1731311.BE90.428X. milanostraps.it offers a selection of handcrafted leather, NATO and rubber straps with a 20mm lug width, made from selected materials and also available in bespoke versions through the Casati Milano atelier.
How long does a leather strap last on a Breitling Colt?
Longevity depends on the quality of the tanning process and the intensity of use. A vegetable-tanned calf or alligator strap, maintained with regular conditioning cream and protected from excessive moisture, retains its structural and aesthetic integrity for 3 to 5 years of regular use. Shell cordovan, owing to the density of its fibres, tends to last longer whilst developing a distinctive patina over time.