The Truly Ergonomic Mouse since 2002 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.

Battery
1 AA battery. Good for about 3 months of average use. Compatibility
Mac
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. Item Dimension (L"xW"xH"):
5.3 x 3.5 x 3.5

Weight:
0.47 lb

Warranty Information:
1 Year