Summary: The mouse is well built but the software driver is terrible. The scroll responsiveness is terrible, right click or left click work when they want so much so I just basically used the mouse as a backup, but do yourself a favor do not buy this.
Summary: I swear by Logitech products. Since my 1st computer I bought, all mice and keyboard purchases were Logitechs (currently sitting at 9 Logitech products). This was something new and I was curious how a touch mouse would feel when using Win-7. I regret the purchase. I was 15 minutes late to work today.
Summary: I saw this mouse in the store and decided to give it a shot. I am a software engineer and use this mouse daily. I am running Windows 8, 64 bit and have the latest drivers. My biggest problem with the mouse is scrolling. It just doesn't respond well enough for me. End of the day, I need more responsiveness and will be purchasing a different mouse in the near future.
Summary: The only reason I can't justify giving this mouse one star is that it does what a mouse should. It left clicks and it right clicks...it just doesn't do either well. I've owned this mouse and used it 8 hours a day at work for 6 months. Please avoid this mouse. It is garbage. When I purchased it I wanted something similar to Apple's Magic Mouse. They both cost the same, but Logitech's T620 is far inferior. Do not buy this mouse.
Summary: The idea is very good. Combining touch with conventional mouse movement for the PC and do for Windows what the mighty mouse did for MAC. However, there are too many twitchy problems with the interface that don't allow for enough natural hand positions which would often cause unintended errors. For example, the mouse click is too pressure sensitive and any hand weight would cause the click and ruin whatever I was doing with the touch surface.
Excerpt: Mouse was very erratic, jumps all over the place. Could not get the left swipe to go back to previous app. all other gestures worked great. Spent half an hour with tech support and they decided the mouse was defective on the left side. Returned it to staples.
Summary: And therefore I hoped to get the same experience with this one combined with windows 8. The mouse is fine, and doing what it says on the tin, but it is absolutely not ergonomic. I am suffering from RSI and this has made things only worse because you cannot properly rest your hand on it. Besides that, you always have to lift one of your fingers to do a left or right click because the click is actually a mechanical click with only one switch.
Summary: The touch-based features are unreliable, and give no tactile feedback.Scrolling is awkward and not as positive as a wheel. Trying to middle-click often results in a left-click. The Windows 8 features are of little value. I trigger them accidently more often than I use them intentionally. The Unifying system works well - an external keyboard and a mouse can share one USB socket. Overall, I'm disappointed.
Summary: I was very sceptical about using a touch interface on a mouse for clicking and scrolling before purchasing this mouse. I wish I had listened my gut feeling and saved myself some money. First the good things about this mouse. The mouse is very nicely shaped. Feels like a bar of soap or a smooth pebble in the hand and it looks very cool. It has a good size for carrying around. It tracks on most surfaces without an issue.