Strap for Colt 41 Automatic Stratus Silver / Rubber

The Breitling Colt A1731311.G820.225S has a lug width of 20mm. This measurement should be taken internally between the two lugs using a millimetre calliper, held parallel to the case. Any replacement strap must have an attachment width of exactly 20mm.

The ideal choice depends on context. For everyday versatility, vegetable-tanned calfskin develops a natural patina and suits the Colt's instrumental character well. For more formal occasions, hornback or mississippiensis alligator provides refined texture and presence. For sport or humid environments, vulcanised rubber or nylon NATO straps offer superior functionality.

Strap replacement requires a spring bar tool. The Colt's lugs accept standard 20mm spring bars. Insert the tool into the lug slot, compress the spring bar, and slide the existing strap free. The process takes only a few minutes and does not require a visit to an authorised service centre.

Yes. The 20mm lug width is widely standardised, and the aftermarket offers extensive options. Milanostraps.it stocks handcrafted leather, rubber, and textile straps specifically selected for this measurement. When ordering, verify the total strap length — typically 115/75mm or 120/80mm for a 41mm case — and the preferred buckle style.

Longevity depends on material and maintenance. A quality calfskin strap, occasionally conditioned with leather cream and kept away from water, typically lasts 2–4 years under daily wear. Shell cordovan outlasts calfskin due to its dense fibre structure. Alligator, when properly maintained, can exceed 5 years. Casati Milano provides an 18-month guarantee against manufacturing defects.