The LCD Writing Tablet is based on pressure-sensitive technology. This LCD writing surface creates lines of different thickness based on how hard you write - just like paper and pen.    Durable plastic materialsThis material is safe for school user, all around the home, office, car and any other places.Long Time Use Battery - 100,000 timesWith a built in a replaceable 3 V cell coil battery, it can work for 3 years - only need to replace every 3 years. It can write over for nearly 100,000 times.    Erase your image with the touch of a buttonFriendly flash from the LCD. Both 8.5'' and 12'' are very convenient for drawing, making notes, business and any writing purpose.    Ultra thin and very easy to take with you.The writing tablet is only 1 cm thickness and 150 G weight. You can put into your bag and even pocket very easy. Come and enjoy the fun of the LCD Hand Writing Tablet, my dear.