Strap for Chronomat 44 Blacksteel / Breitling Jet Team / Rubber

The lug width of the Breitling Chronomat B01 44 MB01109L.BD48.153S is 22mm. This measurement is taken with a calliper placed between the two lugs at the point where the strap meets the case. All aftermarket straps in 22mm are fully compatible with this reference.

For the Chronomat B01 44, an alligator strap with a matte finish is recommended for formal settings, whilst a vegetable-tanned calf strap suits everyday wear and develops a distinctive patina over time. For sport or water-resistant use, vulcanised rubber at 22mm provides full waterproofing and durability. A heavy-gauge NATO nylon strap is ideal for summer wear or for a genuine tool-watch aesthetic.

Strap replacement requires a spring bar tool. Insert the tool into the groove between the lug and the spring bar, compress the bar and slide the strap free. Care should be taken to avoid scratching the polished steel lugs. Alternatively, any watchmaker or the Casati Milano atelier service can perform the swap in a matter of minutes.

Yes. The Breitling Chronomat B01 44 features standard 22mm lugs, ensuring full compatibility with any aftermarket strap in that size. Milano Straps offers a curated selection of handcrafted leather, rubber and nylon straps compatible with this reference, all produced by hand in Italy using carefully sourced materials.

The lifespan of a leather strap depends on the hide, the tanning method and daily care. An alligator strap with vegetable tanning, properly conditioned and kept away from excessive moisture and perspiration, typically lasts between three and five years with regular use. Vegetable-tanned calf has a comparable lifespan and develops a distinctive patina that enhances its aesthetic value over time. Milano Straps provides an 18-month guarantee against manufacturing defects on all its straps.