Hzsmile Creative Erasable Memo Board Fluorescent light message board LED Digital Alarm Clock USB 5 Port Hub With Thermometer Calendar Snooze Gift(Blue) Spectacular digital alarm clock that glow in the dark. Blue color back light, automatically lights up when alarm rang Fluorescence message boards, and any rewritable; the birthday congratulations The date, time, temperature can be switched or Slide show; 12 hours or 24 hours format selection 16 world famous songs and BiBi sound and multi-color LCD backlight. Digital alarm clock with 4 port USB hub, powered by 3*AAA batteries (not included) or USB port. You can write any words on the board what you like. At night, you can read the words on the LED luminous screen board