3 ADJUSTABLE DPI:800,1200,1600 DPI, easily change the cursor sensitivity depending on your activity. The wireless mouse for laptop do not need any driver, plug and play directly. Wireless convenience, freedom-fast data transmission and virtually no delays or dropouts. EFFICIENT WIRELESS TRANSMISSION:Powerful, reliable 2.4GHz optical mouse wireless connection with high anti-interference performance and 10M transmission distance. Computer mouse comes with a Nano receiver (stored in the back of the silent USB mouse with magnetic force). LONGER LIFESPAN:Laptop mouse passed 5,000,000 times keystroke test to guarantee extra durability. Switch button on the back of this cordless mouse to save power. And this computer mice will enter sleep mode after 15 minutes of no-operation. Press any button to wake it up. Note: powered by 1*AA battery (not included). MAXIMUM HAND-FEELING:The slim wireless mouse shape, sweat-resistant and skin-friendly finish are for maximum comfort and support. The thoughtful ring and little finger rest provide extra comfort. The sturdy scroll wheel with rubber makes sure that your hand will not slip when scrolling. UNIVERSAL COMPATIBILITY:Smooth, precise and affordable optical mouse with Nano receiver for laptop, desktop and netbook PCs. Mini wireless mouse well compatible with Windows XP, Windows, Windows Vista, Mac OS X, Windows 2000 Server.