Omega Multi-Function ca. 1988

Function and Display Overview - all controlled via the crown, turn to change functions, push to start and stop chronograph

1) a 24 hour timer
2) a second time zone
3) a Chronograph function
4) an Alarm
5) only seconds and day in digital display
6) only day in digital display
7) digital display can be switched off entirely, then it looks like a dark blue dialed dress watch (the bluish tint comes from the AR coating)
8) Analog time and digital time at the same time.