Δ Erase & Lock Function: Using matching stylus to create different thickness lines, press trash can button TWO times to delete all contents. Turn on the switch to OFF can open lock function - effectively avoid accidental deletion.

Δ Partial Erase Function: Turn on erase mode, press partial erase button ONE time, use silicone eraser (on the top of stylus) to wipe the wrong contents (Wipe Time Limited: Within 30 Seconds). Blue light flashing prompt means it is in erasable mode.

Δ Restore Brightness: After erase the wrong contents, press partial erase button ONE time to restore the last brightness and going ahead to creation (Recommend to open lock function to avoid accidental deletion). Blue light stops flashing.

Δ Various Usage: No radiation, high visibility, it's a useful writing board for business meetings and school practices. There is a magnet on the package, you can put it on the surface of the refrigerator and use it as a family message board or to-do list.

Δ Remind: Please take care of the detachable small parts - battery and screw - should not be placed where children can touch them. Please do not use other material to wipe the contents - it may damage the product.