Two watches. One for each wrist. Both based around the 5711/1A-010 (blue Naut).
Watch on left: central hours, minutes, seconds. crown on right. pushers on left force an indexing travel time hand, as the 5990/1A-001.
Watch on right: no time. crown on left. pushers on right drive a central chronograph, displayed by central hands for hour, minute, and second. rattrapante.