Strap for Chronomat 44 Stainless Steel / Blue / Bracelet

The lug width of the Breitling Chronomat B01 44 AB011011/C788/375A is 22mm. This measurement is taken with a digital calliper placed between the two lugs at the point where the strap attaches to the case. Any strap with a 22mm attachment width is compatible with this reference.

The ideal choice depends on the context. For formal wear, a smooth alligator strap in dark brown or midnight blue complements the quality of the chronograph's construction. For daily use, a vegetable-tanned calfskin strap develops an authentic patina over time. For sport or aviation use, a NATO nylon or vulcanised rubber strap is the most functional option and stays true to the model's origins.

The strap on the Chronomat B01 44 is replaced using a springbar tool, which allows you to compress the spring bars housed within the 22mm lugs. It is advisable to work on a soft surface to avoid scratching the case. The operation requires care but no professional tools: a quality springbar tool and a few minutes are all that is needed.

Yes. The aftermarket for 22mm lug width straps is extensive. Milano Straps offers handcrafted straps made by Casati Milano in various leathers — alligator, calfskin, shell cordovan — and technical materials such as rubber and NATO nylon, all compatible with the Chronomat B01 44. Each strap is made to order and comes with an 18-month warranty against manufacturing defects.

The lifespan of a leather strap depends on the quality of the tanning, daily wear and care taken. A good quality vegetable-tanned calfskin strap typically lasts 2–4 years with regular use. Shell cordovan, thanks to its dense fibre structure, can last over 5 years. Well-tanned alligator, kept away from prolonged moisture and excessive perspiration, retains its structure and appearance for 3–5 years. Rotating between several straps significantly extends the life of each one.