Logitech M570 Wireless Trackball 910-001882 radio, scroll wheel, trackball, PC / Mac, notebook mouse, 2-way (optional)
This trackball is the best and in my opinion the only one who really is any good. I had previously had been the corded version in daily use, this now has a problem to me the left click button. No wonder I edit min. 8 hours daily Excel tables. After a