Rolex 9001

One of the most complex calibers ever created by Rolex, introduced in 2012 for the Sky-Dweller. Features annual calendar (requires adjustment only once per year on March 1), dual time zone with independently adjustable local hour hand, and date display. A selector wheel on the case interacts with the Ring Command bezel for setting functions - an innovative system unique to the Sky-Dweller. Engineered for simplicity of use despite its complexity.