The hallmark feature of this watch is the single-button countdown alarm, set at your discretion for 1, 3, 5, 10, 15, 20 and 30-minute countdowns, with 1/10 second as the measuring unit This attractive timepiece can be used to time and coordinate your busy day in numerous ways First, the regular timekeeping is categorized in hours, minutes, seconds, AM/PM, month, date and day Calendar functions are automatic(set at 28 days for February) You can set a daily alarm, and if you wish an hourly time signal