Press button to clear]: Simply press the erase button on the top of the LCD write pad. You can easily erase all patterns. Very convenient for children. Graffiti and doodles on the tablet. Environmental FriendlyEfinger LCD writing tablet can be erased more than 100,000 times during its lifetime, which means you can save 3 trees by using 1 tablet of Efinger writing. This 8.5 inch tablet uses a CR2016 button battery which can be replaced when empty. Low power consumption and no radiation. Toys for girls and boys aged 3-10A great birthday gift/Christmas gift/holiday gift for children, educational toy, children's kids will enjoy their creativity and you can play with them too. Unleash your natural instincts and love for drawing, counting numbers and spelling words anytime, anywhere. Wide Range of ApplicationsPerfect for doodling by kids and other people, like designers, business people, teachers, students. Also, it can be used as a note board at home to leave messages and even to help people who are hard of hearing.