1) 20 on/off per day, 140 on/off per week.
2) Min. setting time: 1min, max. setting time: 7 days.
3) Summer / winter time optional.
4) Random function.
5) AM / PM or 24-hour display.
6) Rechargeable Ni-MH battery, reserving data once power off.
7) 24-hour countdown function.