From a performance point of view, the BC01 movement has a 100-hour power reserve and is 70 hours higher than B01. This is almost the only real indicator I think Replica Breitling has released to improve performance.
In addition to the BC01 movement, the Breitling Superocean Heritage Chronoworks Replica Watches sports a 46mm-wide case and rotating bezel. Case quality is actually really nice in terms of polishing and overall feel. The dial also has a unique design among other Breitling Superocean Heritage timepieces.
Matched to the 100-meter-water-resistant black ceramic case is a new rubber strap that is meant to resemble the look of Breitling Replica Watches mesh metal bracelet you can get with other versions of the Breitling Superocean Heritage. I do think that Breitling should have included this strap in addition to doing a black-coated steel or titanium version of their otherwise polished steel mesh metal bracelet.