Seiko SSH109J Astron GPS Solar Mens Watch
  •  Power save function   •  Overcharge prevention function   •  Perpetual calendar to the february 28, 2100   •  World time function (39 time zones)   •  Dual-time function   •  Day display   •  Power reserve indicator   •  Time transfer function (Switching between the main-dial and sub-dial)   •  Automatic hand position alignment function   •  GPS signal reception function (Time zone adjustment, automatic time adjustment)   •  Satellite acquisition status display function   •  Reception result display function   •  DST (Daylight Saving Time)   •  Function to prevent the GPS signal reception (in-flight mode)