That's a month since I use it and I am really very happy with my purchase! I was nervous before receiving it because I had read reviews here and there that she was not very ergonomic but this is not the case: the wife mouse although the shape of the hand (at least in my case) because the mouse is "normal" size (it's not a "notebook" on which your hand is curled up) .The mouse is what is more pleasant the touch. The fact fall back on itself is also very convenient for transportation. This allows especially to save batteries, these latter being disabled when the "closure" of the mouse. Another strong point of this mouse, the radio receiver. It is very small! It protrudes only 1.5 cm from the USB port (shame though that the mouse is not bluetooth) so ideal for those who have a laptop and do not want to have one of those big ugly receiver on the side of their pc!
The foam arch however, some small flaws: - The mouse is extremely sensitive. I was forced to lower the maximum sensitivity in windows settings because otherwise it was difficult to control - The very small pads under the mouse is almost useless so it sometimes (but rarely I assure you) that the mouse "hangs" on the desktop (note that I did not use mouse pad)
In short, a mouse that I recommend to those looking for a wireless mouse with a small radio receiver.