I've really become taken with the plasma gray blue dialed Bathyscaphe in ceramic, it's a terrific combination! However, I wanted to check one something first before considering a purchase. I know that some ceramic watches affix their caseback with via press-on or some sort of glue, while others screw into an inner steel frame and not the ceramic case. Omega on the other hand, pioneered a ceramic for their Deep Black that allows the NIAD lock caseback to be screwed directly into the ceramic case, as reportedly their ceramic blend is 'elastic' enough. Being another SWATCH firm, does BP use this technology for their ceramic watches, or are they utilizing something akin to the inner steel case or snap-on/ glue-on?