1. Calender: 2000 to 2099 years, show time, date, week, temperatere, (AM+PM) 12 hour could convert 24 hour
2. Alarm and snooze fuction: can set the alarm and choose from 8 alarm bell clock, also can use snooze fuction
3. World time fuction: can show the world time and local time in the same time, and can set 16 cities as local time
4. Timer: count down from 23:59 to 00:00. When the time reach to preset time, will have alarm reminder.
5. LED digital clock
Specification of Led Digital Clock Display Circuit