Strap for Chronomat 44 Stainless Steel / Onyx Black Roman / Bracelet

The lug width of the Breitling Chronomat B01 44 reference AB011012.B956.375A is 22mm. This measurement is taken with a millimetre calliper positioned on the inner face between the two lugs of the case. It is one of the most common dimensions in the sport-luxury segment, ensuring a wide availability of compatible aftermarket straps.

For the Chronomat B01 44, the most suitable options are: alligator in dark brown for a formal register, vegetable-tanned calf leather for a natural patina that evolves over time, FKM rubber for sport and outdoor use, and ballistic nylon NATO to echo the original aeronautical aesthetic. The choice depends on the context of wear and the desired chromatic pairing with the dial.

To replace the strap on the Chronomat B01 44, a spring bar tool with a forked tip is required. Insert the tip into the lug hole, compress the spring bar to release it from its seat in the case, then remove the strap. The new straight-end strap (22mm) is fitted in reverse order. It is advisable to work on a soft surface to avoid scratching the stainless steel case.

Yes, the aftermarket for 22mm straight-end straps is extensive. MilanoStraps offers a curated selection of handcrafted straps in leather, alligator, calf and rubber specifically compatible with the Chronomat B01 44. It is important to verify that the strap features a standard straight profile and 22mm spring bars to ensure correct and secure fitting.

The lifespan of a leather strap depends on the quality of the hide, the tanning process and the conditions of use. A high-quality vegetable-tanned calf strap, with proper care (avoiding prolonged water exposure and excessive humidity, applying nourishing cream periodically), typically lasts between 2 and 5 years with daily wear. Premium alligator straps can last considerably longer. MilanoStraps provides an 18-month warranty against manufacturing defects.