Logitech MX Ergo Wireless Trackball Mouse

OVERVIEW: A NEW STANDARD OF COMFORT AND PRECISION Logitech's most advanced trackball for trackball enthusiasts and consumers searching for alternatives to mice and touchpads. Delivers 20% less muscular strain compared to a regular mouse. MX ERGO features a unique adjustable hinge for personalized comfort and the latest tracking, scrolling and power management technology. Logitech FLOW enables effortless cross computer control.