Anker Ergonomic Optical USB Wired Vertical Mouse 1000/1600 DPI, 5 Buttons CE100 The intersection of class, comfort and functionality. A mouse for the 21st century. Tired of using the traditional grip? Take a break from overly-clunky or uncomfortably tiny mice. The ergonomically-designed thumb rests and grips fit the contour of your palm for maximum comfort. Turn heads with a futuristic design. Made for increased functionality and comfort, this mouse combines a handshake grip with a easy-access buttons and three levels of mouse sensitivity for improved tracking. Five buttons give you improved control over your computer's systems. Whether dragging and dropping, selecting large volumes of data, or casually gaming, this mouse provides a low-cost, effective solution for multiple computing needs.