Bidirectional rotatable 24-hour graduated bezel. Two-colour red and blue Cerachrom insert in ceramic, engraved numerals and graduations
Oyster, flat three-piece links
The GMT-Master, introduced in 1955, was developed to meet the needs of intercontinental airline pilots, and proved invaluable to those whose professions involve long-distance travel. Featuring a rotatable 24-hour graduated bezel and a separate 24-hour hand, it allows those who travel the world to read two different time zones simultaneously, and up to three by turning the rotatable bezel.