Adopting the newest LCD pressure-sensitive technology, This version of screen has been widely praised. It's a simple alternative to pen and paper. You can use Attached stylus or other plastic pens to write and draw, just like writing on the paper. Environmentally friendly and a money saver - you don't need to waste money on papers, pencils or erasers anymore, one writing tablet can repeat 100, 000 times. Suitable for all ages, from young to old. A great idea for toddlers to keep them busy at restaurants, anyone who enjoys drawing Electronic writing board has a lock function. Switch ‘Lock’ button to the right side with lock function to avoid any accidentally erase. Switch ‘Lock’ button to the left side will enable the ‘Erase’ button.