New Seiko 5 Sports models pay homage to Seiko's beloved archive of the 1970s: “Time sonar." Unique specification that shows the workings of the watch by showing the day-date disk through the translucent dial. Since the day-date disk can be seen through, different design can be enjoyed depending on the language of the local calendar. The coloring is also an homage to “Time Sonar" and has an accent color on the seconds hand which is a symbolic coloring pattern