Limited edition of 88 pieces u boat watch chimera 46 sideview diamond limited edition a model of clarity and boasting profoundly clean appearance the 51mm stainless steel case with hidden strap lugs had a completely unique design that retained the signature u boat size and crown cap yet was otherwise distinct from the rest of the range characterised by sapphire curved glass not only on the face and the back of the timepiece but also with a side window with a fum sapphire glass which all