Strap for Chronomat 44

The lug width of the Breitling Chronomat B01 44 is 22mm. This measurement is taken with a calliper between the two lugs at the point where the strap meets the case. Respecting this dimension is essential to ensure a precise fit and a clean aesthetic on the wrist.

For the two-tone steel and rose gold version, a vegetable-tanned alligator strap in cognac, tobacco brown or black is the most balanced choice: it enhances the warm tones of the rose gold and complements the formal-sporting character of the Chronomat. Alternatively, smooth or fine-grain calf leather offers everyday versatility and develops a distinctive patina over time.

The Chronomat B01 44 uses standard spring bar lugs. To replace the strap, use a fine-tipped spring bar tool: compress the bar laterally and slide the strap free from the lug. No specialised tools are required, but it is advisable to work on a soft surface to avoid scratching the rose gold case elements.

Yes. Any strap with a 22mm attachment and standard spring bars is compatible. Milano Straps offers handcrafted straps cut to 22mm with millimetre-level precision, available in alligator, calf leather, rubber and NATO. The slightly tapered lug profile of the Chronomat is compatible with both straight-end and tapered straps.

The lifespan of a leather strap depends on the quality of the hide, the tanning process and daily use. A handcrafted alligator or vegetable-tanned calf strap, with ordinary care — rotating between multiple straps and avoiding prolonged water exposure — can last between 2 and 5 years whilst retaining a presentable appearance. Milano Straps provides an 18-month guarantee against manufacturing defects.