Strap for Chronomat 44 Stainless Steel / Red Gold / Black - Roman / Japan Special Edition

The lug width of the Breitling Chronomat B01 44 CB011012/B957/388C is 22mm. This measurement should be taken with a digital calliper inside the lugs, at the point where the strap sits, not across the outer edge of the case. A replacement strap must have straight ends and a standard 1.8mm spring bar diameter.

For the CB011012/B957/388C in Red Gold and stainless steel, a vegetable-tanned alligator strap in cognac or tobacco creates the most coherent chromatic dialogue with the rose gold inserts. Vulcanised rubber is the preferred choice for sporting use or humid environments, whilst a ballistic nylon NATO offers a more casual yet aeronautically consistent aesthetic, true to the Chronomat's origins.

To replace the strap on the Chronomat B01 44, a fine-tipped spring bar tool is required. Insert the tip between the lug and the strap to compress the spring bar, releasing one side at a time. The Chronomat's lugs have a relatively shallow depth, so it is advisable to work on a soft surface to avoid scratching the steel case or Red Gold inserts. No watchmaker visit is needed for this routine operation.

Yes. Any 22mm aftermarket strap with straight ends is compatible with the Breitling Chronomat B01 44. Milano Straps produces handcrafted straps in 22mm specifically proportioned for this reference, available in alligator, Tuscan vegetable-tanned calf leather, rubber and NATO nylon. Each strap includes stainless steel spring bars suited to the original lugs.

The longevity of a leather strap depends on the quality of the hide and the conditions of wear. A first-grade alligator or vegetable-tanned calf strap, with routine care — periodic cleaning and avoidance of water immersion — will comfortably last three to five years whilst retaining structural integrity and a dignified patina. Heavy daily use or frequent perspiration exposure will reduce service life; in such conditions rubber is the more practical choice. Milano Straps provides an 18-month warranty against manufacturing defects on all handcrafted straps.