Specifications: Simulated natural light, no stroboscopic, reduce eye fatigue. 2000 or 4000mAh large capacity battery, super energy endurance. Suitable for bedroom, living room, dining room, university dormitory, coffee table, bookcase, study, bar, restaurant, etc. Rechargeable mobile or fan or night lamp. Designed with penand phone holder, convenient to watch video from smart phone. Type: Desk Lamp Material: ABS Charging Time: 3h Rated Voltage: DC5V Use Time: 8h- Strong Light, 16h- Medium Light, 48h- Low Light Rated Power: 2.5W Battery Capacity: 2000mAh, 4000mAh (Optional) USB Output: 5V or 1A Color Temperature: 4200-4600k Features: 360 Degree, with Phone or Pen Holder, Touch Sensor, Eco-friendly Size: 13cm x 43cm or 5.12" x 16.96" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Desk Lamp 1 x USB Cable 1 x User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store