GMT Watches
GMT or Dual-Time watches are timepieces capable of displaying more than one time-zone. By the mean of an additional central hours hand (often linked to a 24H scale on the dial), or a rotating bezel with additional hour scale, or a sub-dial with an additional indication of the time, the wearer can be informed of both the home-time (his departure position) and the local time (the time-zone where he is currently travelling). It is also used to display an extra time-zone for people working in international environments.
