* indoor & outdoor temperature and
indoor humidity display （
automatic exchanging in 5 seconds
between indoor & outdoor
temperature）
* temperature unit ℃/℉
changeable
* memory of MAX/MIN value of
temperature & humidity
* 2 modes of time display: 12h /
24h
* pointing function on each hour
* everyday alarm function
* calendar display function
week display function
* clock & date display function,
automatic exchanging in 5 seconds
between clock & date