yes you can, through 2 buttons :
1- first button is fully erasing button you can delete all the written stuff on the screen.
2- second button once you click on it you can erase any part by your hand or the rubber on the back of your pen
writing tablet is a kind of electronic device that uses high tech flexible liquid crystal technology to display words, patterns and graphics by pressure. You can write or draw with some gentle pressure. And it’s extremely low power consumption, it only uses power when you erase the screen.