●Ergonomic Design make your hand more healthier and less overall strain. Widely compatible with Windows 2000/ XP/Vist /7/8/10/Linux.Easy to Use-USB receiver at the bottom of mouse and need battery. Power saving mode after 8 minutes idle ●Stable connection with less noise click-reliable 2.4G wireless mouse connection with high performance with 33ft.Quieter click makes you concentrate on work without disturbing others. ●Vertical Ergonomic Mouse easily adjusts the DPI of the mouse. 800/1200/1600 DPI Resolution Optical tracking on a wide range of surfaces and more precise. ●Six buttons is a nice choice for computer mouse, gamers and other network activity.Especially the "Page Back" and "Page Forward" functionality. ●Excellent Service for your satisfied, If you have any questions for our ergonomic vertical mouse,Please feel free to contact us for Replacement or Refund.Hope you have a pleasure purchase. ●If the mouse can not move after 8 minutes idle ( for Power saving mode ), It is normal situation, please click the mouse again to activate. Mouse just for power saving mode and can work normal.