The Oyster Perpetual Yacht-Master II regatta chronograph is intended for experienced skippers as well as yachting enthusiasts. It is the first watch to have a programmable countdown feature with a mechanical memory
a timer which can be adjusted to start between one and ten minutes in advance, depending on the start sequence of a regatta.
The Yacht-Master II has a Ring Command bezel which rotates through 90 degrees, giving access to the countdown programming function, and it is equipped with a new movement, the 4160 calibre, consisting of 360 components.
As the company says, Rolex is known for relying heavily on its own watchmakers
designers, engineers and related specialists
and each of these 360 components is entirely designed and manufactured by Rolex