Compact Size USB LED Mouse This 3-Button USB Optical Scroll Mouse features a comfortable, ergonomic design that is easy to use! It offers a resolution of up to 800 dpi and a superior optical technology that works on most surfaces - no need for a mouse ball. Plus, its Magic Scroll Technology allows you to easily scroll, click and zoom for fast Internet and document navigation! Black and clear design 3-buttons Scroll Wheel (acts as a third button) Magic Scroll Technology to scroll, click and zoom Superior optical technology Comfortable, Ergonomic design Resolution up to 800 dpi Approximately 56-inch cable length