7 in 1, desk lamp with USB charging port, 256 color changing base, pencil holder, clock, calendar and LCD screen, it meets all your requirements. USB Port: Output 5V/2A USB charging port,so you can spend less time to remain full electricity for your mobile device.Touch the spectrum ring to adjust 256 color changing base, create any variety of atmosphere at the night. If hold down the spectrum ring for 2 seconds, the color would cycle automatically, now you can color your night and life with this magic lamp.