Smarson LED Desk Lamp, 4 Light Modes, 5 Dimmer Levels, USB Port, White 4 Lighting Modes: Change between color temperature settings: study, reading, relax, and sleeping. Personalize for any scene, study and reading modes provide a cooler white light, while relax and sleeping modes produce a warmer light 6 Dimmer Settings: Choose the level of brightness that suits your activity. Lower dimmer levels make a great night light for bedrooms USB Port: Conveniently charge devices through the base of the lamp, making it perfect for smart phones and tablets. No need for any wall outlets Space Saving Design: Fully adjustable lamp can be tilted 180 degrees between body and station, and rotated to the left or right by 90 degrees. Ideal for lighting in dorms or apartments Additional Features: Lamp's side emitting soft LED light makes it a great desk accessory for those with sensitive eyes. Decrease energy consumption through the 1 hour auto timer option. Voltage: AC100-240V. DC12V Output: 5V