Logitech MX Ergo is a wireless trackball offering personalized comfort with a unique adjustable hinge and precision tracking with multi-device capability. The MX ERGO reduces muscular strain by 20% compared to using a standard mouse. With the adjustable hinge, the angle can be increased from 0 to 20 degrees which improves wrist posture and pronation. The carefully sculpted shape provides full palm and finger support for the hand, while the soft rubber on the top ensures a good, comfortable grip for long hours of work. MX ERGO offers the ability to instantly change cursor speed and accuracy for optimal control with the press of a button. An LED light illuminates when precision mode is activated, giving ideal control with the trackball.