Seiko Men's Two-Tone Blue Dial Perpetual Calendar Watch Imported Two-tone watch featuring screw-accented bezel and blue dial with date window and luminous markers. Because the calendar is pre-adjusted at the factory, you only need to set the time and date, and the calendar will automatically update itself. 40 mm two-tone case with Hardlex dial window Japanese quartz movement with analog display Two-tone stainless steel band with foldover clasp Water resistant to 100 m (330 ft): In general, suitable for swimming and snorkeling, but not scuba diving;