Features: Provides superior comfort: The patented ergonomic shape supports your hand in an upright neutral posture that eliminates forearm twisting. Great fit & relaxing grip: The new shape is even more relaxing to grip and fits the hand even better than before. A larger lip better supports the last finger. Adjustable laser sensor: A pointer speed button behind the wheel allows convenient adjustment without even changing your grip on the mouse. Pointer speed indicator: Top mounted LEDs indicate selected pointer speed from low to high. Sleek design: The illumination turns off when the system is in sleep mode to conserve notebook battery power Powerful ergonomic software: Mouse Manager software enables configuring 5 buttons for performing many actions without moving the mouse or touching the keyboard Specifications: 5 button mouse Resolution (cursor speed): 500/1000/1500/2000 USB Plug & Play Operating system: Windows Vista, 7, 8, 10, OS X 10.5 PC :Includes driver for Windows XP, 7, 8, 10 for programming 5 buttons. Mac:Includes Mac driver for programming 5 buttons. Linux: Fixed button functions without a driver. Third party drivers are available for some versions of Linux. Dimensions: 3.54" W x 3.15" H x 4.69" H 2 year manufacturer warranty split The Evoluent mouse family is proud to welcome a new member: the stylish Evoluent C. This ergonomic mouse not only features a luxurious look and a new shape but also sports a number of technological improvements.