The Yacht-Master II, a unique regatta chronograph.

Created in 2007 to suit both experienced sailors and yachting enthusiasts.
The Oyster Perpetual Yacht-Master II features an exclusive function – a
programmable countdown with a mechanical memory that can be
synchronized on the fly. Responding ideally to the need for precise timing
during the crucial starting sequence of a regatta.
This model is no longer in the catalogue.