Wireless Mouse, Anker Ergonomic USB 2.4G Wireless Vertical Mouse with 3 Adjustable DPI Levels 800 / 1200 / 1600 and Side Controls - Black

Ergonomic Wireless Vertical MouseThe Premium Ergonomic Mouse with High Responsiveness From ANKER, the Choice of 10 Million+ Happy Users• Industry-Leading Technology • Extended Warranty • 99% Positive Feedback Ergonomic DesignA well-designed and contoured mouse body supports your palm and cradles your thumb and pinky finger. The ergonomic design allows smoother movement and prevents wrist strain caused by traditional mice. High ResponsivenessSimply press the DPI button and switch between DPI levels 800, 1200 and 1600 to adjust the mouse's responsiveness to suit whatever you're doing. Optical Tracking Technology ensures greater sensitivity for precise tracking on a wide range of surfaces. Enhanced FunctionalityAdded back/forward buttons positioned where the thumb rests increase web browsing convenience for internet surfers, gamers and people who work at length at the computer. Plug and PlayEnjoy the convenience of a tangle-free, wireless mouse as soon you've inserted the included USB receiver. After eight minutes of being idle, the mouse will automatically enter power saving mode. Premium FinishThe sleek matte finish provides a smooth surface that enhances grip and prevents smudges or fingerprints. Worry-Free WarrantyAt Anker, we believe in our products. That's why we back them all with an 18-month warranty and provide friendly, easy-to-reach support. Supported SystemsWindows 10 / 8 / 7 / Vista / XP, Linux, Mac OS X(The two thumb buttons are not recognized on the Mac OS X.) Note:This mouse is not compatible with Mac OS X El Capitan.