Bluetooth connectivity
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
The shape is thoughtfully sculpted for uncompromised comfort and easy-to-reach programmable buttons. No finger contortions are needed to operate the buttons.
The thumb rest has been reshaped to provide even more comfort over earlier versions.

Technical Details

Size (LWH): 5.5 inches, 3.8 inches, 3.6 inches
Product Details
Product Dimensions: 5.5 x 3.8 x 3.6 inches
Shipping Weight: 0.5 pounds (View shipping rates and policies)
ASIN : B00O4I43RA