
YACHT-MASTER II
116681
Oyster, 44 mm, steel and Everose gold
The Yacht-Master II is designed to meet the needs of professional sailors. This regatta chronograph features the world's first programmable countdown with a mechanical memory. It provides precise synchronization with the crucial starting sequence of a yacht race.

4161 MOVEMENT
Features
The Yacht-Master II is equipped with calibre 4161, a self-winding mechanical regatta chronograph movement entirely developed and manufactured by Rolex. The result of over 35,000 hours of development, the Yacht-Master II introduces a new regatta countdown with a unique, patented mechanical memory created by Rolex. A number of the 360 components in the 4161 movement are so tiny or complex that they can only be made by new, cutting-edge technology.
Like all Rolex Perpetual movements, the 4161 is a certified Swiss chronometer, a designation reserved for high-precision watches that have successfully passed the Swiss Official Chronometer Testing Institute (COSC) tests. Its architecture, in common with all Oyster watch movements, makes it singularly reliable.