Product description Luminous flux580lm(max) Input Voltage(V) :100-240V 50/60 HZ Output Voltage(V): 5V-1A Color Temperature:3000k/4000k/6500k Wattage: 7W CRI: Ra>80 Colour: Black material: metal Package content: 1*Led clip table lamp 1.Flexible Gooseneck Design The flexible and infinitely adjustable neck and head can be adjusted up and down 180 and rotated 360 for easy positioning and setting of perfect lighting directions as needed. 2.Dimmable10 Brightness Levels - Press brightness button can allows you to easily adjust the brightness level between 10% and 100% to achieve the perfect lighting. easily find the perfect lighting for your project. 3 color temperatures optional - Reading lamp have 3000K-4000K-6500K (3 color temperatures) Satisfy your different lighting needs. 3.USB Powered & Memory Function This desk lamp come with an adapter. Insert the USB Cable to power adapter, computer or other USB devices to power the clip lamp. Brightness memory will memory your current brightness when turn off the light. (Note: if you cut off the power supply instead of turning off the switch, it will release all settings.) 4.Desk Lamp Clamp Easy to Install The clip on light with strong metal clamp can be clipped on any flat surface that the thickness is less than 4-6cm(max) thick. 5.Professional Eye Protection Adopting diffusion translucent material, close to daylight illumination, emitting soft light without ghost, glare or flicker. led task lamp suitable for bedside, reading, music stand, drawing, work, study, etc.