USB Wired Vertical Ergonomic Optical Mouse( Right Handed ) Package includes:   1x USB Wired Vertical Ergonomic Optical Mouse Package Description USB Wired Vertical Ergonomic Optical Mouse( Right Handed ) Quantity:1 * Scientific ergonomic design encourages healthy neutral "handshake"   wrist,arm positions for smoother movement and less overall strain. * 800/1000/1600 DPI Resolution Optical Tracking Technology provides   more sensitivity than standard optical mice for smooth and precise   tracking on a wide range of surfaces. * Added next/previous buttons provide convenience when webpage   browsing; the superior choice for internet surfers, gamers and people   who work at length at the computer. * 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 two 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. * Compatibility: Windows 8 / 7 / Vista / XP / 2000; Linux; Mac OS X (The   previous/next page thumb buttons are not recognized on the   Mac OS X.)