Interestingly, the movement being used to power this watch is the P.900, a thin, three-day automatic with date that we have previously seen in the company’s Luminor Due range. It’s interesting because those watches were made to be thin, to be worn under a shirtsleeve in more formal settings. At more than 14mm thick, this Submerible isn’t thin by any stretch, but that hasn’t prevented it from taking advantage of this new 4.2mm-thin automatic movement.