Tipsfor using the writing pad:1. When the writing pad is left for a long time or not used for a long time, the delete button may not be deleted. Please remove the battery, rub it with your fingers, or clamp the positive and negative poles of the battery with a metal object for 3-5 seconds, You can reactivate the battery, do not reverse the front and back of the battery, reinstall it into the writing board and delete it normally;2. The initial state of the handwriting pad lock button is off, please confirm whether the lock button is turned on for the first use.Main Features:12-inch LCD board without backlight, eye protection and thousands of times resuableSensitive writing surface with stylus, delicate color lines, fifth generation flexible screen technologyOne-click erase, press the button to erase the written content, fast and convenient The replaceable built-in CR2016 battery can be used for a long time Ultra-thin and lightweight body, easy to carry Can be used as a message board for convenient communication With a magnetic bar at the back, it can be stuck on refrigerator conveniently It is a good helper for children, students, business people, designers, engineers, teachers, etc.Specification:Type: Intelligence toysAge: 3 Years+Material: ABS,PCColor: RedProduct Weight: 215gBattery Type: Button Battery(including)Product size (L x W x H): 190 x 279 x 5 mmUsage: Student draft board, children sketching pad, schdule board, home message board, etc.Note:This Handwriting Board is made by Xiaomi ecological chain -- Wicue, there is no Xiaomi marks on the products.