Strap for Chronomat 44

The Breitling Chronomat B01 44 (ref. IB011012C790375C) features a lug width of 22 mm. This measurement is taken as the internal distance between the two lugs at the point where the strap meets the case. The strap typically tapers to 20 mm at the keeper and buckle end.

For a two-tone steel and 18kt rose gold case, the most suitable materials are alligator leather in cognac or burgundy — which complements the rose gold accents chromatically — or vegetable-tanned calf leather for a more contemporary look. Vulcanised rubber is preferable for sporting or marine use, whilst a ballistic nylon NATO strap references the model's aeronautical heritage.

Strap replacement requires a dedicated strap tool (flat-head screwdriver or spring bar lever). Compress the spring bar securing the strap to the lug, slide out the existing strap and insert the new one, ensuring the spring bars are correctly seated in both lug holes. The operation takes under a minute and requires no intervention on the case or movement.

Yes. Any strap with a 22 mm attachment width is technically compatible. Since the Chronomat B01 44 lugs are slightly curved, straight-end straps still fit with good aesthetic results. For maximum line continuity, curved-end straps can be requested. Milano Straps offers handcrafted 22 mm straps made to order.

Longevity depends on leather type and usage. A quality vegetable-tanned calf strap, with regular maintenance (nourishing cream every 2–3 months, kept away from excessive water and perspiration), typically lasts 2–4 years. Alligator leather, being more compact and less porous, can last 4–6 years. Milano Straps provides an 18-month guarantee against manufacturing defects.