Strap for Chronomat 44 Stainless Steel / Diamond / Onyx Black / Rubber

The lug width of the Breitling Chronomat B01 44 is 22mm. This measurement refers to the internal distance between the two lugs, taken with a digital calliper at the point closest to the case. All 22mm straps from Milano Straps are fully compatible with this reference.

The most suitable straps for the Chronomat B01 44 are: perforated rally-style calf leather (coherent with the motorsport aesthetic), vegetable-tanned alligator (for formal occasions), heavy-duty NATO nylon (for sport or marine use), and vulcanised rubber with a steel deployant clasp (for water activities). The correct lug width is 22mm.

The strap is replaced by removing the two 1.8mm springbars that secure it to the case lugs. Use a dedicated spring bar tool with a forked or pointed tip. The operation takes only a few minutes and requires no specialist watchmaking skills. Always work on a soft surface to avoid scratching the case or lugs.

Yes. Any 22mm strap with a straight or slightly curved end is compatible with the Chronomat B01 44. Milano Straps produces handcrafted straps in 22mm specifically tailored to Breitling lug geometry, available in a wide range of leathers, colours and buckle options.

The lifespan of a leather strap depends on leather quality, frequency of use and exposure to perspiration and water. A quality calf leather strap, with regular daily wear, typically lasts 18 to 24 months. A vegetable-tanned alligator strap, properly maintained, can exceed 3 to 4 years. All Casati Milano straps from Milano Straps carry an 18-month manufacturing warranty.