1.LCD display 2.Display: year, month, day, hour, minute and second 3.Countdown timer, maximum time of 999 days 23 hours 59 minutes and 59 seconds 4.Alarm function,clear and loud 5.Calendar: 1999 to 2050 6.Credit card size and super-thin 7.Used both in the outdoor and indoor:school, laboratory, parking, nap alarm, kitchen cooking time control