DX-220 uses a new generation BlueEye technology for more desktops such as: carpets， sofa， frosted glass ... etc. DX-220 provides the most advanced engine and 1200 dpi， high accuracy personalized blue mouse， even after prolonged use and still feel comfortable， not only can improve efficiency， but also a perfect match for your computer work environment. Product Features: USB interface. Next generation BlueEye technology. High accuracy is suitable for left and right hand. More Desktop as applicable: carpets， sofa， frosted glass