3 ADJUSTABLE DPI: 800/1200/1600 DPI, easily change the cursor sensitivity depending on your activity. No need any driver, plug and play directly. Comes with an USB receiver (stored in the back of the mouse). QUIET CLICK & ERGONOMIC DESIGN: Mute quite clicks make you concentrate on your work and free you worry about bothering others; Heightened mouse cover fits your palm perfectly. ERGONOMIC SHAPE: Ergonomically sculpted design and soft rubber grips conform to your right or left hand to be naturally comfortable, and the compact size makes it easy to take with you wherever you use your computer?aat home, at work, or anywhere else. STRONG DURABILITY & LONG WORKING DISTANCE: Passed 5,000,000 times keystroke test to guarantee extra durability; 2.4GHz wireless technology ensure the working distance up to 50ft. WIDE COMPATIBILITY & 12-MONTH WORRY-FREE WARRANTY: Well compatible with Windows7/8/10/XP, Vista7/8 and Linux etc. Fits for desktop, laptop, PC, Macbook and other devices; 12-month worry-free warranty(Side button cannot be used in Mac)