8 Day Power reserve Reverso Duo with 2 separate time zones driven by the manual wind movement. Silvered guilloche dial displays the big date and day/night indicator. The reverse black dial can be set as a second time zone with a 24 hour subdial, GMT indicator and 8 day power reserve display. All the functions are easily set by the pushers on each side of the winding crown. 18ct rose gold case and bracelet in immaculate condition, and complete with its original box and certificate, dated Dec 2009.