Strap for Colt 36 Pearl Diamond / Sahara / Pin

The Breitling Colt A7438911/A771/213X/A16BA.1 features an 18mm lug width. For an accurate replacement, it is recommended to measure directly between the lugs using a digital calliper at the innermost point, to account for any production tolerances.

For the Colt 36mm in brushed stainless steel, the most suitable materials are smooth-belly alligator for formal settings and vegetable-tanned calf leather for everyday wear. Shell cordovan is the premium choice for those prioritising durability and a slim profile. For sporting or aquatic use, a vulcanised rubber strap is the most technically coherent option given the watch's 200m water resistance.

Strap replacement requires a spring bar tool — either a flat-tip or forked-tip variant — inserted into the slot between the lug and the strap end. It is advisable to work on a soft cushion to prevent case scratches. With some practice, the operation takes under two minutes. If in doubt, consult a watchmaker or the Casati Milano atelier.

Yes, any strap with an 18mm lug width is dimensionally compatible. Milano Straps offers a curated selection of handcrafted aftermarket straps in various materials, all fitted with standard 18mm spring bars. For the best fit, a straight or gently tapered end profile is recommended to complement the Colt's lug geometry.

Longevity depends on the material and conditions of use. A quality calf leather strap worn daily with moderate exposure to perspiration and humidity typically lasts 12 to 24 months. Shell cordovan can exceed 36 months thanks to its dense fibre structure. Alligator, when treated regularly with appropriate conditioners, maintains its integrity for 2 to 3 years. Casati Milano straps carry an 18-month manufacturing warranty.