I have had this mouse for over a year now. Its an awesome mouse, and is as claimed the worlds most advanced, mainly because of the scroll wheel it has. If you click the wheel, it *free wheels* or spins. This great on the net, or in spread sheets, large documents etc, as it allows you to quickly get to the bottom of page. I couldn’t go back to a mouse that didn’t have this feature. Logitech call this feature *Hyper fast scrolling*. The wheel can also be tilted sideways to scroll left or right across a page or document.
The Mouse features a Lithium-Ion battery and a docking station, for recharging. I dont spend all day on my PC so I get weeks between charges, which is great. The docking station works great, as the mouse makes contact with charging contacts, without having to jiggle it (like I do with my Harmony remote).
The mouse has a button that allows you to select Google (or any search engine you set), just below the wheel. Its handy but I still instinctively click on text box in my browser(firefox or chrome), most of the time. I tend to use it when creating a text document and am not in a browser.
The side mounted thumb wheel allows you to swap between apps, and again is handy but not something I use that often. Above this are forwards and back buttons. The back button gets a fair workout on the net, to skip back a page, but I rarely use the forward button.
The main left and right click buttons are great, with a nice click feel. Overall the mouse is very comfortable to use and does save some time over a standard mouse. I imagine if I was full time keyboard jockey(power user), it would prove invaluable.
This product is also fully Apple Mac compatible, and all functions work on Apple Macs
I rate this product 8 out of 10