Strap for Chronomat B01 42 Stainless Steel / Red Gold / Anthracite / Rouleaux

The lug width of the Breitling Chronomat B01 42 (ref. UB0134101B1U1) is 22 mm. This measurement should be taken internally between the two case lugs using a digital calliper. It is the correct dimension to specify when ordering a compatible aftermarket strap.

For the Red Gold and Stainless Steel variant, a vegetable-tanned alligator strap in tobacco or cognac tones complements the warm hues of the rose gold and provides excellent wrist stability thanks to the belly grain texture. For daily wear, smooth calf leather in burgundy or black offers greater abrasion resistance. A deployant clasp in steel or rose gold completes the pairing symmetrically at the lugs.

Changing the strap on the Chronomat B01 42 requires a standard 22 mm spring bar. Using a spring bar tool or a flat-head screwdriver, compress the spring bar within the lug and slide the strap free. No case disassembly is required. It is advisable to work on a soft surface to prevent scratching and to ensure both spring bars click firmly into position before wearing the watch.

Yes. Any strap with a 22 mm lug width is technically compatible with the Chronomat B01 42. Milano Straps offers a curated range of handcrafted straps in alligator, calf leather, shell cordovan, NATO nylon and rubber, all supplied with spring bars included. Dimensional compatibility with Breitling lugs is verified across the entire 22 mm range.

The lifespan of a leather strap depends on leather quality, tanning method and daily use. A quality alligator or calf strap with vegetable tanning, worn regularly, will retain structural and aesthetic integrity for between two and five years. Exposure to perspiration, humidity and direct sunlight accelerates deterioration. Milano Straps provides an 18-month manufacturing defect warranty on all handcrafted straps.