A4-D28B Rechargeable Copy Desk Drawing Board, Specification: With Charging Line+EU Plug Adapter 1. Material: ABS + light guide + PC panel 2. Light source: LED component 32 lights 3. Input voltage: 5V 2A 4. Interface: Type-CUSB-C 5. Power: 2.05W 6. Color temperature: 6500K 7. Battery capacity: 1500mAh 8. Endurance: about 4-5h 9. Dimming mode: six-speed + stepless 10. Brightness: 1830LUX 11. Applicable scenes: copying, painting, design, observation, etc. 12. Light-emitting size: 21.8 x 31.1cm 13. Size: about 34.2 x 24.3 x 1.1cm 14. Weight: about 615g Features: 1. Behind with invisible heightening frame, can be opened, easy to use 2. With spring fixing clip, easy to fix the paper 3. Comes with a scale, convenient to use when measuring alignment 4. Type-CUSB-C charging port, compatible with all kinds of USB chargers, more convenient to use 5. Built-in large-capacity lithium battery (1500mAh), wireless use, the battery life can reach 4-5h 6. Infinitely adjustable brightness, easy to control