Display mode: DP-1:time,date,temperature automatically display in turns; DP-2:only time
Calendar:2000-2099 years
12/24 hour format is available for selection :(initial mode:24-hour;January 1 2014;12:00 clock)
Every time can set up three groups of alarm, each alarm 1 minute, sound is:bi bi bi....
18:00-07:00 half luminance,and four luminance to set(L0-L1-L2-L3)
DC5V/500MA power supply by USB(or 4*AAA,sound control function is recommended ON, when batteries used ), built-in battery keeping time display program running inside but invisible outside