Carrera 12 Dato 2547

Triple-calendarComplete calendarA calendar displaying the day of the week, date and month. It needs manual correction after months shorter than 31 days because it does not automatically account for their different lengths. Often accompanied by a moon-phase display, which is a separate indication. Also called a full or triple calendar. Carrera (day, date and month) with a 12-hour chronographChronographA watch function for starting, stopping and resetting an elapsed-time measurement independently of the ordinary time display. on the Valjoux 723 — the most complicated Heuer of its day. Early cases are screw-back with wide lugs; later ones monocoque (snap-on back) with narrow lugs. Clebar and Zodiac sold otherwise identical versions.