Just upgraded to Windows 8 as a result of the acquisition of a new computer, I let myself tempted by this touchpad Logitech ... Unpacking: immediate impression of an object of fine quality ... heavy enough to be stable, slippery surface "at will" and very easy installation. Thereupon no regrets. No weakness not more about the battery: it has indeed die hard, as promised by the manufacturer description. For several weeks this tool is operational, there is still the question: is it REALLY helpful? Because to control the machine (extended capabilities at very true), we must accept a long (and boring for me) learning to memorize an array of hand gestures and fingers. Most having nothing intuitive, it must comply with a gym rather forbidding, with the instructions under the eyes. And I must admit that was not far from a flawless attendance in training, I do not draw so far the quintessence of this very successful keypad. Especially that eventually, Windows 8 also works very well with a mouse and keyboard!