Across Time Zones The GMT-Master II has long been the companion of global travellers, a watch that unites technical innovation with enduring style. This 40mm model in Oystersteel reflects that heritage, offering clarity and functionality across time zones. Its black dial and two-colour rotatable bezel underscore its distinctive character within the GMT-Master collection. Reliable Performance Powered by the calibre 3186 with a 48-hour power reserve, this reference features an Oyster bracelet with Easylink extension for comfort. The sapphire crystal ensures durability and precision.