This cordless indoor/outdoor lamp is powered by a rechargeable 2000 mAh battery that you can light up anywhere without the cord restricted; When fully charged, the lamp can work for 6 hours, and up to 120 hours(always minimum brightness) 
Size : 11.8 inches height, 5.1 inches diameter
Multi-function: 3-colour modes (3000 K warm light for bedtime, 4500 K natural light for reading, 6000 K cold light for writing) can be switched by briefly touching the button; You can also adjust the light brightness smoothly by long touching 
No need to install bulbs that saves time and money; This lamp can be charged by Type-C USB cable from outlets, laptops, or powerbanks; It can also keep working while charging.
Please note, this light is plastic and lightweight.