The Big Bang Unico GMT solves one of the troubles facing frequent flyers. In this model Hublot has redesigned their Unico movement to integrate GMT functions. With the simple push of a button, you can update the watch to your new time zone. The display of the Big Bang Unico GMT is equipped with a fourth hand which indicates the time at home and features a day-and-night disc for added ease. Telling time between your travel location and home has never been easier.