...However while both these models have 22mm lugs, it's still highly unlikely that the bracelets will be interchangeable. While both bracelets use straight end-links, it all comes down to where the spring bar holes are drilled. As a general rule bracelets are not usually interchangeable, although there are a couple of exceptions to the rule - for example if I remember correctly, the Chronomat Pilot bracelet fits the B1....but it's more luck and coincidence than anything else. Unless you can physically try it before you buy it, then you're best to assume they won't be interchangeable as otherwise you could be making an expensive mistake.