100% Efficiency Improvement wireless mouse has a 6-level adjustable DPI (800/1200/1600/2000/2400/3200). Compared with ordinary mice, this wireless mouse has faster and more accurate tracking, helping you to improve your work efficiency. You can set different DPI according to your needs. 30 Months y Life Using advanced process chips and intelligent power-saving technology, the wireless mouse can enjoy up to 30 months of use time with only 2 AA ies (not included). The USB mouse features independent power switches and sleeps modes to minimize y consumption, saving you time and money. 50ft Wireless Distance The wireless mouse has a 50-foot use range, which reduces interference and delay for you. No need to install any drivers, plug the wireless mouse into the device and you are ready to go! The wireless mouse is suitable for various surfaces, such as desktops, , paper, etc. Even without a mouse pad, this mouse works quickly. 30° Ergonomic Design The computer mouse provides a comfortable 30° ergonomic holding angle to keep your hands relaxed. The wireless mouse has non-slip rubber on the sides, and the finger rest is designed to keep your thumb in a comfortable position. The mouse helps you reduce the strain on your hands caused by prolonged mouse use. 8 Million Clicks Lifetime mouse is durable and can withstand 8 million clicks, giving you a super long usage time. This laptop mouse is easily compatible with Windows XP, Windows Vista, Windows 7, Mac OS X 10.4 and other systems to meet your daily use needs.