XREXS &reg; Digital Alarm Clock 4 USB Clock Message Board Memo Board and Highlighter/alarm Clock(blue) Size: 5-1/2"x4-3/4"x4-1/8" (14x12x10.5 cm) The birthday congratulations and timing and countdown Write your words with the highlighter on the board and then lit the backlight, it will show what you write. Also you can erase the words if you want.