Logitech MX Ergo Plus Wireless Trackball Mouse

Features Trackball mouse with reliable optical tracking Trackball mice require less wrist movement than traditional mice, since they track the motion of the built-in ball instead of the movement of the entire mouse. Logitech advanced 2.4 GHz wireless connection Wirelessly connects ...Features Trackball mouse with reliable optical tracking Trackball mice require less wrist movement than traditional mice, since they track the motion of the built-in ball instead of the movement of the entire mouse. Logitech advanced 2.4 GHz wireless connection Wirelessly connects to the included Unifying nano-receiver, which plugs into your computer's USB port and works across an array of Unifying-compatible wireless devices.