VIMVIP 3200DPI USB Wired Optical Game Gaming Mouse Black for Computer PC Free driver 4 -speed transmission , 800/1600/2400/3200 DPI, speed random control. Built- Engineering Mechanics heavier iron , stable center of gravity craft , moving more smooth, more precise positioning . Ergonomic construction, 10 million hits life , sensitive keys, comfortable to use, operating ease, strong and durable. High-speed USB interface, ultra-high scanning frequency , to meet the professional game enthusiasts on the speed and accuracy requirements . Package contents:1 x 6D Gaming Mouse,User Manual and CD.