DIY Memo Message Board 

• You can write any words on the board what you like. At night, you can read the words on the LED luminous screen board. There are 12 hours or 24 hours format selection,degrees Celsius or Fahrenheit option and three regular alarm clock and snooze function. When you are outside, you can also leave a message on the board to your family. Or you can set at some points of one day to ring automatically happy birthday song. This clock supplies four USB charging hubs or three AAA batteries. It is a great assitant with rich functions for you. 
• Power supply: USB charging port or AAA battery (Batteries not included) 
• Size: Approx. 138 x 117 x 64mm (max) 
• Item description: USB clock message board
• Material: ABS plastic + PMMA acrylic
• Power supply: DC 4.5 V 1 a
• Weight: 150 g