The most complete and updated guide on modern and vintage Rolex GMT-MASTER, with the updated estimates of every GMT.PRESENTATION: HOW TO KNOW EVERYTHING ABOUT THE ROLEX GMT-MASTERThe GMT-Master was created to meet the needs of Pan American Airways to supply its pilots with a wristwatch able to indicate the time back home and the time in their arrival destination simultaneously. It was necessary to give the pilots a “technical” wristwatch, which indicated simultaneously the two different times.
