First-rate Quality Girard Perregaux Tourbillon Mens 99730.52.151.BA6A Manual Winding Black Leather watch comes with great quality and outstanding performance. This Mens watch is powered by an excellent Manual Winding. Black Leather bracelet around your wrist is very comfortable. Silver dial is easy to read. The 18k Rose Gold case has a very classic Round shape. The size of the watch is 44mm. It also had good waterproof function.