The Rolex Sky-Dweller ref 326934 is a coveted steel and white gold model with an Oystersteel finish and a remarkable 18k white gold Ring Command bezel.  While the fluted bezel is instantly recognizable as a Rolex trademark, it also serves a very functional purpose by linking to the crown and movement.  By rotating the bezel, the wearer can adjust each of the functions offered by the movement one by one.  This innovative design has since made the Sky-Dweller a favorite among passionate collectors.  Interestingly, the many functions provided by the movement also give the collection its distinctive design, including a 24-hour ring at the dial’s center, a 3 o’clock date, and markers above each hour to display the month.