Review on Renewed Logitech MX ERGO Advanced Wireless Trackball for Windows PC and Mac by Jhalak Jhalak ᠌

Excellent trackball, performs its functions remarkably, got used to it very quickly. The shape overexerts the thumb of the right hand, but, oddly enough, the trackball fits well under the left hand, allowing the dominant hand to rest (the ball rotates with the ring finger and little finger, buttons under the middle and forefinger).