Product Luminous flux: 580 lm (max) Input voltage (V): 100-240 V, 50/60 Hz Output voltage (V): 5V-1A Color temperature: 3000k / 4000k / 6500k Power: 7W CRI: Ra 80 Color: Black Material: Metal Package content: 1 * LED clip table lamp 1 . Flexible Gooseneck DesignFlexible and infinitely adjustable neck and head can be adjusted 180 up and down and rotated 360, making it easy to position and adjust the perfect lighting directions as needed. 2. Dimmable10 Brightness Levels - By pressing the brightness button, you can 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 has 3000K-4000K-6500K (3 color temperatures) Meet your different lighting needs. 3. USB Powered Memory FunctionThis desk lamp comes with an adapter. Plug the USB cable into the power adapter, computer or other USB devices to power the clip lamp. The brightness memory saves your current brightness when you turn off the light. (Note: If you turn off the power instead of turning off the switch, all settings will be unlocked.) 4. Desk Lamp Clamp Easy to InstallLight clamp with strong metal clamp can be fixed on any flat surface less than 4~6cm(Max) thickness. 5. Professional Eye Protection Diffusion permeable material close to daylight illumination that emits soft light without ghosting, glare or flickering. LED work lamp suitable for bed, reading, music stand, drawing, working, studying, etc.