Omega "Seamaster Memomatic", Movement No. 31333538, Ref. 166.072, Cal. 980, 42 mm, circa 1970

A gentleman's automatic wristwatch with date and alarm - with box
Case: steel. Dial: blue/silver. Movm.: rotorwind movement, 1 hammer, 1 gong, Glucydur balance.

The "Memomatic", model of 1970
This design stood for two world premieres in the field of alarm wristwatches; it was the first rotor self-wind system with only one barrel driving both the movement and the alarm. It was also the first alarm wristwatch where an alarm could be set to the minute.