Button Mouse : Evoluent VerticalMouse [EVO-R/EVO-L] $61.95

  Specifications:
Resolution: 1200 dpi true optical resolution
Length: 4.6"/11.7 cm
Width: 3"/7.6 cm
Height: 3"/7.6 cm
Cable: 2 m
PC and Mac compatible
Choose from right- and left-handed model
 

The grip is the same as an ordinary mouse, just turned sideways, and the buttons are operated by the same fingers, so there is virtually no retraining necessary. The mouse does not move sideways when clicking with normal force. Pointer control is as accurate as any other good mouse. And it's great for games. The 1200 dpi true optical resolution sensor reduces hand movements. (Other mice have 800 dpi)

Relax Your Wrist
The Evoluent VerticalMouse 2 has a patented new shape that supports your hand in a relaxed, handshake position and eliminates arm twisting. Once you experience the superior comfort, you will never go back to an ordinary mouse.

Evoluent VerticalMouse   [EVO-R/EVO-L]    $61.95  
 

The Evoluent VerticalMouse 2 has a patented new shape