Dear buyer, please note that all our writing boards are 100% checked and sent. Make sure you receive the perfect writing board. The delete button can be used. Please remember to turn on the switch on the back of the writing board and use delete Button. In this way, the delete button can be used flexibly. Parameters: Name:9-inch LCD tablet   Pressure output:100-300g   Battery Model:CR2025   Panel:Flexible LCD panel   Material:LCD ;ABS   Features:   1. With LCD Writing Tablet, children can freely release their natural instincts, enjoy painting, count numbers, spell words at any time and place without no longer making a mess on the ground or walls. 2. The writing tablet surface creates lines of different thickness based on how hard you push, just like writing on paper with a pen or pencil.   3.The 9 inch size of drawing board would make it easy to be taken out everywhere. And the writing tablet is made from friendly material, safe for school use and all around the house, office and car.   4.It is just like a piece of paper that can't be used up The drawing tablet is built in sealed button battery(replaceable), which can work Long time with Tens of thousands of erases.   5.Lcd screen without Radiation and glare, all protect eyes, be more safe and comfortable when you create work for a long time.   Package List:   1 * LCD writing tablet   1 * Plastic stylus 1 * Color Box