Fangrui Product Details 1. Portable 9-inch Smart Digital Drawing Board Bluetooth Usb Connected To Mobile Phone, Cloud Note With High-precision Writing Pen 2. About Our Product 3. Battery Capacity: 1000mah Pen Battery Capacity: 80mah 4. Mobile System Support: Iosandroid Support 5. Computer System Support: Windows Xpwin7 Or Above 6. Connection: Bluetooth, Usb 7. Technical Type: Electromagnetic Induction 8. Writing Pen Opening Mode: Pressure Induction 9. Input: 5v1a 10. Induction Height: 5~14mm 11. Charging Port: Usb 12. Product Characteristics 13. With A 9-inch Smart Writing Area, You Can Easily Carry It With You For Personal Or Business Purposes, Such As Writing Notes, Drawing, And Sketching 14. You Can Save What You Write On The Smart Digital Drawing Board On Your Phone 15. Preferred Products For Teaching, Drawing And Meeting Minutes