Logitech MX Master Wireless Mouse is a precision instrument designed to provide the ultimate experience for power users and masters of their craft who want to get more done, more efficiently. MX Master offers advanced features and a stunning design, optimized for Windows and Mac. Enjoy ultimate comfort, control, precision and customization. The perfectly crafted, hand-sculpted shape of this comfort mouse is contoured to support your hand and wrist in a natural position. Well-positioned buttons and wheels enable fine-motion control and a fluid experience. Connect the mouse to as many as three Windows or Mac computersusing either the included tiny Unifying receiver or Bluetooth Smart wireless technology. Either way, you can switch between computers with just one touch of an Easy-Switch button on the bottom of the mouse.