Avoids forearm twisting for comfort and good health* The patented shape supports your hand in an upright neutral posture that generally avoids forearm twisting. Many users, including medical doctors, ergonomists and physical therapists, said the Evoluent VerticalMouse provides superior comfort and even relieved their wrist pain. Features : - Comfortable and easy to use / The shape is thoughtfully sculpted for uncompromised comfort and easy-to-reach programmable buttons. No finger contortions are needed to operate the buttons. - Adjustable Optical Sensor / Pointer speed controls on the side allow convenient adjustment without even releasing your grip from the mouse - Pointer speed indicators / Top mounted LEDs show through the chrome thumb rest to indicate selected pointer speed including extra low (XL), low (LO), MD (medium), to high (HI). - Powerful and intuitive driver Evoluent Mouse Manager for Mac provides extensive but easy to use functionality for 6 buttons through a simple and intuitive interface. - Extended lip prevents rubbing / An extra wide lip along the bottom edge prevents the last finger from rubbing the desk. Bluetooth connectivity Connects to Mac systems via Bluetooth. Battery ? 1 AA battery. Good for about 3 months of average use. Compatibility Mac ? Bluetooth connectivity. ? Not compatible with Windows. ? Includes Mac OS X driver for programming 6 buttons. The driver is not required. VerticalMouse 4 still has basic functionality without the driver. Warranty 2 years
