Item Type: LCD Drawing Board Material: ABS Display Panel: Flexible LCD Screen Writing Pressure: 300g Built-in Button Battery: 1 x CR2025, 150mAh Handwriting Color: Colorful Package List 1 x Writing Board 2 x Handwriting Pen 1 x Ruler 1 x Triangular Ruler 1 x Protractor 1The back of the drawing board is equipped with an antierasing lock to avoid accidentally touching the clear button, and onekey lock. 2Builtin button battery, low power consumption, durable, a button battery can be used for several months. 3Flexible LCD screen has no bright light or blue light to protect children's eye health. 4You can do graffiti and play at home, practice pen writing, leave a message on the message board, and record at any time in the office. 5The ultranarrow frame design leaves a larger innovative space and cultivates children's imagination. 6Colorful writing, flexible screen, clear handwriting, antierasing lock screen, onekey erasing.