Grand Seiko Sport Collection 9F Quartz GMT 40mm Watch Steel The watch is driven by three row stainless steel The watch is driven by the OMEGA Co Axial Master Chronometer 9900 large zipped pocket The twin pulse quartz calibre 9F86 delivers the high torque needed to keep the wide hands moving precisely and offers the wearer the convenience of being able to change the time zone without stopping the seconds hand The orange of the GMT hand is mirrored in the dial ring to make it easy to read the 24 hour hand at a glance and the GMT hand is illuminated by a Lumibrite that emits a different colour than that of the hour and minute hands and indexes