Model: 25720/002

Description:36mm, automatic winding watch with 21k gold rotor, and jumping hour and minutes. The time is indicated by three rotating transparent sapphire disks. Each disc is painted with four hour indicators and are attached to a rotating center wheel. As the discs turn, the hour indicators rotate into view and pass over the minutes. The time is displayed where the visible disc points to the current minutes. The movement can be viewed through the sapphire crystal display back. This watch took one and a half years to develop.