4.4 inch small LCD writing tablet, an ideal substitute for post-it notes, an excellent toy for kids
You write on the 4.4" black screen with the stylus, or anything with a not-very-sharp tip; then hit the eraser key to clear whole screen. Change the CR1220 coin battery when eraser stops working.
Please confirm with seller if inventory are available if you need 1 or more samples. For mass production orders it usually takes 2-3 weeks to get parts ready to ship.