Mx ergo is crafted for the shape of your hand and built for fast and precise tracking. Adjust your hand and wrist posture with the unique 0 or 20° tilt angle. The trackball creates 20% less muscle fatigue in your hand, wrist, and forearm than a regular mouse. The hand-crafted shape of mx ergo ensures full palm support, while the soft rubber offers a comfortable grip. Easy thumb control makes excellent tracking and accuracy part of your daily routine. The precision mode button (dpi) lets you seamlessly switch between precision and fast-tracking modes. Features less movement, better posture full palm support more control and precision works anywhere you work precision scroll wheel with tilt