The waterproof Monaco Calibre 11 chronograph is a reinterpretation of the original from 1969. All the typical features, such as the crown on the left, the legendary petroleum blue dial with two white counters, or the Calibre 11 movement with chronograph function, automatic winding and date display, are still there. What is new is that the shape of the case is slightly squarer. Both the push-buttons on the sides are rectangular and the lugs are larger. The back is transparent to allow sight of the movement.