LED clock

Functions:
* time display, 12/24 hour switchable
* alarm function: daily alarm, 3 groups of alarms or workday alarm
* date function (year 2000 ~ 2099) 
* indoor temperature range: 0℃- 50℃(32˚F - 122˚F)
* 3 different display modes for option
* power saving function
* sound controlled function
* external power off protection function
* overturn the clock to close the alarm
* overturn the clock to switch the display function
* LED brightness adjustable function: high-brightness and half-brightness for option
* reset function
* power saving function:Saving power function: under saving power mode, clap the hands or make the big noise to turn on LED screen.