The functions of this 2014 Cellini Dual Time watch from Rolex are hours, minutes, seconds, second time zone and day-night display. These functions are cleverly set out on a black guilloche dial that is covered by a high-tech scratch proof sapphire crystal front glass. The dial uses elegant dauphine hands and polished index hour markers to show time. It also showcases a beautiful Rolex logo at 12 o'clock and a stylish second time zone subdial that is integrated with day-night display at 3 o'clock. The watch features a comfortable and durable black crocodile strap and a round case and fluted bezel made of 18K rose gold.