Material: Plastic+Copper wire Power Supply: USB DC5V + Battery 3xAA 1.5VSwitch:TouchHeight: 45cm-50cm Base Diameter: 12cmprompt:1. Please check the color, and size before purchasing.2. Product photos do not include products other than products.3. Please note due to the different that monitors, slight chromatic aberration may occur, please forgive me.4. The above data is for reference only, the size is manual measurement, the mistake is 1-3 cm, please allow, thank you.5. If you find any problems with our products, please feel free to contact us by email and we will resolve this issue as soon as possible.6. Welcome to share and feedback to provide you with better services and products.without harming your eyes; ideal for reading