Strap for Chronomat B01 42 Red Gold - Diamond / Black / Rubber

The lug width of the Breitling Chronomat B01 42 RB0134721B1S1 is 22 mm. This measurement is taken with a calliper between the two lower lugs of the case and is essential for selecting a perfectly fitting aftermarket strap with no lateral play or tension.

For the 18-carat red gold version, the most suitable materials are alligator belly leather in tobacco, cognac or bordeaux shades, and box-calf leather in black or dark brown. Both enhance the warm tones of the metal. A vegetable-tanned strap develops a patina over time that harmonises naturally with red gold. Vulcanised rubber is recommended for sporting use.

To replace the strap on the Chronomat B01 42, a spring bar tool or lever-style opener is required. The 22 mm lugs accommodate standard spring bars that compress laterally to release the strap. It is advisable to consult a watchmaker or experienced technician, especially on red gold cases, to avoid scratching the lugs.

Yes. Any 22 mm straight-end strap is compatible with the Breitling Chronomat B01 42 RB0134721B1S1, provided it maintains the correct width at both the lug and the keeper. Milano Straps offers bespoke handcrafted straps in selected leathers, available in various materials and finishes, with customisable lengths to suit individual wrist circumferences.

The lifespan of a leather strap depends on the quality of the hide, care and daily use. A quality vegetable-tanned or alligator strap, regularly treated with appropriate conditioners and not exposed to excessive water or perspiration, can last between three and seven years while retaining its aesthetics and structure. Milano Straps products carry an 18-month guarantee against manufacturing defects.