I am lucky to wear a 5066 on the bracelet and the strap. Although i prefer the appearance of this most gorgeous bracelet and its light weight, I admit that i am always astonished at the weight with the strap, as though my wrist is bare. I use it daily vs a jaeger gran sport duo in the operating room, and can tell you tthat an aquanaut is great for play, relaxed fit suiting,swimming, vacationing, etc. and a steel /white metal watch always attracts less nefarious attention than would the unabashed beauty of a calatrava in yellow or rose color. As a previous commentator remarked, the clasp is outstanding but requires appropriate length or pinches on the underside of the wrist. The bracelet is flawless. And, as above,l would have both if possible, 5115 or 5117 for date and crown guard.the weight is enough of an issue to make me hold off as i save for the 5712a. What do you guys think?