Seastrong Diver Extreme Automatic GmtThe Seastrong Diver Extreme Automatic GMT. One movement and three time bands. The GMT is displayed with a second central hours hand known as the 'home time zone' while the central hours, minutes and seconds hands denote the time wherever the wearer is on their travels; the date window at 6 o'clock is naturally synchronized with this time band. No additional controls are required to operate the GMT function: everything is done via the single, secure