1. Material: ABS+silicone 2. Battery capacity: 400mAh lithium battery 3. Input: 5V-1A 4. Use mobile phone downloads the APP, scan the QR code on the card to perform smart AR 3D interaction 5. Insert the card to read aloud, simple operation 6. Fun cartoon patterns to enhance childrens interest in learning 7. No screen design, learning does not hurt your eyes