The RX650 Cordless Optical Mouse offers customers the innovation, reliability and performance they need at a great value: The FastRF Cordless technology and improved optical engine with 1000 dpi resolution, provide precise and smooth tracking. The Easy-scrolling and tilt wheel with its new grid design, facilitate vertical and horizontal scrolling, making it easy and comfortable to use. The plug-and-play wireless mini receiver allows users to take it everywhere they go. Smart power management