At the top of the roster is a mechanical limited edition, which comes in a stainless steel, 38.5mm x 16.7mm case and which is powered by a Sellita caliber SW-510BHb automatic chronograph movement; this is a two-register chronograph movement with small seconds at 9:00 and a central seconds chronograph hand. It’s only very slightly larger, it looks like, than the original. (I haven’t had a chance to measure this exact model in person, but the Deep Sea 666 Chronograph B was 37mm x 15mm.) The original, like the new version, had running seconds at 9:00, a central chrono seconds hand, and a 30-minute register at 3:00… More here.
Beautiful packaging. A nice, if expensive, watch.