But original ...

This mouse is primarily a design. She is beautiful, original, modern, very current because of the tactile principle ...
On the side of use is already less nice. In fact, it already does not believe that the click is actually done by touch as on a smartphone or tablet ... The presence of the finger is detected (left, right) and the click is done through the movement of the above mouse, which as a cap with respect to the below. so there has a real click and so clicking noise. The sound is more muffled than on a conventional mouse and therefore less strong than most. To left click, two fingers or finger left only can be installed on either the mouse. As against the clique of right, the left finger finger definitely not be installed, otherwise it's the left click is considered. On the other hand, the touchpad enables pages movement (back before) and movements of movements (up / down as a wheel and left / right). The surface is quite sensitive and we are often disappointed by a sudden change of page was not wanted. It can be very annoying.
BUT !! The small program that allows you to adjust the mouse, allows very well set, clicks and movements. you just have to take a few minutes for that. I myself, for example disable the page change to have no unexpected changes.
As for accuracy and speed, for the office, a simple and conventional use, nothing to say, it is doing very well.
Plus, the stop button which saves the batteries. Too early to judge the autonomy.
In summary, it is not perfect but it works great for everyday use. Just remember to take the time to set it for your use, your needs!