Breitling Navitimer GMT: Indicating the second zone time (our home time) through the 24-hour-hand with the red arrow. Breitling uses an in-house calibre.
Hermès Dressage L’Heure Masquée: Unless you use the push piece that is integrated in the crown the Hermès watch will only show the current minutes and indicate the word “GMT” in the little window at 6 o`clock position. When you use the push piece that is integrated in the crown the correct local time will be shown and in the little window you second zone time. For its “masked time” Hermès uses an in-house calibre.
IWC Ingenieur Dual Time: Indicating the second zone time (our home time) through the 24-hour-hand with the blue arrow. IWC uses a Sellita automatic calibre with an in-house module. (In contrary to what was published elsewhere you can change/set the time through the hour hand in one-hour-steps. You will not loose your minutes and seconds.)