Product parameters: 1. Very easy to use: Press the "Delete" button and all written or drawn content will be hidden in one second. There is also an anti-clearing function coming^ 2. Preset: When using it for the first time, if you want to delete the written content, please click the lock button on the back. ^ 3. Very lightweight size: So Die electronic writing tablet can be easily carried in a backpack, handbag, backpack or briefcase. ^ 4. Multi-function: With this portable writing tablet, you can record your ideas anytime and anywhere and avoid wasting too much paper. It is a perfect gift for children, students, and a perfect gift for designers, businessmen, teachers, etc. ^ 5. Eye-optimized and environmentally friendly: This LCD writing surface does not emit glare or radiation. This means that your eyes are optimally protected. The writing/drawing tablet is paperless and therefore very environmentally friendly. Operated by button batteries"