1. A4-d28b Rechargeable Copy Desk Drawing Board, Specification: With Charging Line 2. Material: Abs + Light Guide + Pc Panel 3. Light Source: Led Component 32 Lights 4. Input Voltage: 5v 2a 5. Interface: Type-cusb-c 6. Power: 2.05w 7. Color Temperature: 6500k 8. Battery Capacity: 1500mah 9. Endurance: About 4-5h 10. Dimming Mode: Six-speed + Stepless 11. Brightness: 1830lux 12. Applicable Scenes: Copying, Painting, Design, Observation, Etc. 13. Light-emitting Size: 21.8 X 31.1cm 14. Size: About 34.2 X 24.3 X 1.1cm 15. Weight: About 615g 16. Features: 17. Behind With Invisible Heightening Frame, Can Be Opened, Easy To Use 18. With Spring Fixing Clip, Easy To Fix The Paper 19. Comes With A Scale, Convenient To Use When Measuring Alignment 20. Type-cusb-c Charging Port, Compatible With All Kinds Of Usb Chargers, More Convenient To Use 21. Built-in Large-capacity Lithium Battery (1500mah), Wireless Use, The Battery Life Can Reach 4-5h 22. Infinitely Adjustable Brightness, Easy To Control