Item Type: Writing Tablet Material: LCD, ABS Product Battery Type: Button Battery (Shipped with Built in Battery) Battery Model: CR2016 Battery Capacity: 75mAh Number of Batteries: 1 Piece Package List 1 x Writing Tablet 1 x Pen 1[Eye Protection] The LCD screen has no radiation, which can protects the eyes, and it is safer and more comfortable to work for a long time. 2[Easy to Carry Portable] With innovative full screen design, the board is easy to carry, can be easily put in a briefcase, backpack or other bags. 3[Simple operation] With the features of simple operation and high efficiency, all content can be cleared by pressing the clear key once. 4[Long Battery Life] Built in replaceable button battery, battery life can last for more than 1 year, you don't need to worry about power off. 5[Wide Application] This writing tablet can be used by both adults and children. It can be used for drawing, graffiti, meeting records and memos.