Evoluent Right-Handed USB-A Vertical Mouse - Dark Grey - (VM4R)

This mouse has a lip along the bottom of the mouse to prevent your pinky finger from dragging on the desk, and contouring which provides comfort, reduced grip force and exceptional control. Performance driven improvements include an instantly accessible pointer speed control button on the side of the mouse allowing you to select between Extra Low, Low, Medium and High, giving you the ability to select the degree of precision you require for each task. An additional thumb button can also be reconfigured once a driver is installed. This is the Standard, Wired, Right Handed model (VM4R), and the VerticalMouse 4 comes in a standard wired model in either right (VM4R) or left (VM4L) in a dark grey housing with silver buttons. A Standard sized Wireless Right-Handed model is also available (VM4RW - black housing with dark metallic blue buttons). Small Right-Handed versions of this mouse are also available in a wired model (VM4S - black housing with purple buttons) and wireless model (VM4SW - black housing with metallic brown buttons). The small models are suitable for people with hands which are shorter than 7" (17.8 cm) long from the tip of the middle finger to the wrist crease, standard models are for hands longer than 7" (17.8 cm). If you are looking for a large version of the VerticalMouse, consider the VerticalMouse D which comes in a Large Right-Handed size in both Wired (VMDL) and Wireless (VMDLW) models.