Arnold & Son develops movements that are both technically and aesthetically worthy of the House’s historic timepieces. Among the more important specifications for the Eight-Day Royal Navy is a long power reserve of 192 hours (eight days), integrated indicators and a slim case. Ultimately, then, the positioning of every element had to be carefully thought out to achieve the optimum arrangement for the displays on the dial. Thus, is born the A&S1016 manual winding calibre.