3 ADJUSTABLE CPI 800,1200,1600 easily change the cursor sensitivity depending on your activity. 2 polling rate: 125Hz and 250Hz. Comes with a Nano receiver (stored in the back of the mouse). No need any driver, and you can plug and play the wireless mouse directly. STRONG DURABILITY & LONG WORKING DISTANCE Passed 5,000,000 times keystroke test to guarantee extra durability. 2.4GHz wireless technology and professional chip ensure longer working distance MAXIMUM HAND-FEELING Contoured 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. EXTREMELY LOW POWER CONSUMPTION This computer mouse will be in sleep mode in few minutes of inactivity. Press any button to wake it up. Note: powered by 1*AA battery (not included). WIDE COMPATIBILITY Well compatible with Windows7/8/10/XP, Vista7/8 and Linux etc. Fits for desktop, laptop, PC, Macbook and other devices.