The Rolex GMT-Master II is a highly sought-after watch among collectors and enthusiasts. It is renowned for its accuracy and reliability, as well as its unique design. The GMT-Master II was first introduced in the early 1980s and was designed to be used by pilots and other professionals who needed to keep track of multiple time zones. The watch is equipped with a special 24-hour hand that can be set to a different time zone, making it easy to keep track of multiple time zones at once. The GMT-Master II is also equipped with a date function and a stopwatch function.