The LCD Writing Tablet uses high technology flexible liquid crystal technology,depends on the pressure sensing to display text, pictures and graphics. It can be erased over 500,000 times. You don't need to use an eraser, just press the button, the screen will be clean again. Save on paper! Save the environment with this eco-friendly solution for kids drawing and learning.  Specifications It's very thin, just 0.4 inch liquid crystal technology Just use the plastic pen to write on the board, or use other small plastic material Then erase with the button Product dimension : 22.1 x 14.6 x 0.4 cm Product material : ABS + LCD LCD screen Colour: Red  What's included 1 x LCD writing board 1 x Writing stylus 1 x Battery inside 1 x Colourful packing box