Description [LCD Screen Design] The LCD screen has no radiation, protects your eyes, and is safer and more comfortable for long-term use. [Easy to Carry] Innovative design with full screen; lightweight and easy to fit into a portfolio, backpack, or other bags. [High Efficiency] Simple operation with high efficiency; press the erase button to clear all content. [Long-Term Application] Built-in replaceable battery with a lifespan of over 1 year; no need to worry about power outages. [Enhanced Durability] Enhanced impact protection; friction-resistant writing with a writing feel close to real paper. Product Type: Handwriting Board Material: LCD, ABS Battery Type: Button Battery (includes built-in battery) Battery Model: CR2016 Battery Capacity: 75mAh Quantity of Batteries: 1 piece Package Includes: 1 x Handwriting Board 1 x Pen