Only authorized service facilities have access to genuine Breitling parts. So, if you take it to a storefront watchmaker for service and it needs parts, he will not be able to get them. He will have to use aftermarket parts. If the watch ever goes to a Breitling service center, they will remove those parts and replace them with the correct Breitling part. You will end up paying twice for the same parts.
Except for the new B01, Breitling uses ETA ebauche movements in their watches. However, they rework and replace many of the parts in the generic movement to bring the movement up to a higher quality standard.
Additionally, the hands are always replaced. They are designed to be installed only once. Again, only authorized service centers can get the hands. A good watchmaker can close the holes in the hands so they will fit, but he's going to charge you for it.
It's your watch and you are free to decide on the best service since you must pay the bill. I'm a watchmaker and I will send my Breitling to BUSA when it needs service although I'm fully capable of working on it myself. I will only work on a vintage Breitling that I personally own.
