I tried to use this for several weeks, but was unable to get used to it. There is no scroll wheel. You no longer left or right click with your index and middle finger, that's all done with your thumb. Not using it anymore, so waste of money. I'll go buy a standup mouse instead.

I have BEEN USING THIS PRODUCT FOR 20 YEARS AND ONLY JUST HAD TO REPLACE IT RECENTLY. IT DELIVERS WHAT IT SAYS - PAIN FREE MOUSE USE. EASY, COMFORTABLE AND EXCELLENT QUALITY, IT IS NOT A CHEAP PRODUCT ULTIMATELY, BUT WORTH EVERY CENT, ESPECIALLY WITH A 20 YEAR LIFE.