Item Type: LCD Writing Tablet Product Material: LCD, ABS Product Battery Type: Button Battery (shipped with built in battery) Battery Model: CR2016 Battery Capacity: 75mAh Number of Batteries: 1 Package List 1 x LCD Writing Tablet 1 x Stylus Shipped with Built in Battery 1SAFE and RELIABLE: LCD screen has no radiation and dazzling light, with eye protection, safer and more comfortable working for a long time 2SMALL and COMPACT: Unique full screen design, easy to carry, can be easily put in a briefcase, backpack or other bags 3DIY INTERESTING: No need to worry about children graffiti on the ground or wall, they can use the writing tablet to enjoy drawing and spelling words anytime, anywhere 4SIMPLE OPERATION: Simple operation, high efficiency, just press the clear key to clear all content 5BUILT in BATTERY: Built in replaceable button battery, battery life for more than 1 year, no need to worry about power failure