As is clear in the reference nomenclature, both versions can be had as time-only with a Seiko VH31 quartz movement or as a GMT version with a date at six on the dial (so stealthy) and a very cool digital-style GMT aperture at 12 that is powered by the Ronda 515.24D quartz. Apart from the movement-based functionality, the link UT1 models also have a 60-minute countdown bezel.