Often copied, but never surpassed, the iconic GMT Master was first launched in 1955 and was expressly created to serve international airline pilots. 50 years later, in 2005, the GMT-Master II has been masterfully reworked to include a rotatable 24-hour graduated bezel as well as a separate 24-hour hand. This gives the wearer the ability to tell the time at a glance in three separate time zones.