1) Exclusive lighting solution with Minimalist design & aluminum housing. 2) Dimmable at light brightness and color temperature. You can choose the right brightness and color temperature: neutral light warm white(for reading) or cool white (for concentrated work). The rotating button on the top makes it very easy to adjust the light. 3) Safe and energy-saving LED lighting. Compared with traditional incandescent lamps modern LEDs used in table lamps will not damage eyesight or burn out and can save up to 90% of electricity. These safe and energy-saving light sources can be used for more than 25 years. Product Information: Power: 15 watts Light brightness adjustment function: yes Brightness range: 30-100% Color temperature adjustment function: yes Color temperature: 2500- 6500 K Color rendering index: 80Ra Adapter: 100-240V wide voltage Shell material: aluminum