Pros below: If you don't use a mouse pad - the most common normal mouse, there are side buttons on the right, they do nothing by default, but it is stated that they can be programmed in the application, like the backlight of the mouse. The side buttons on the left work as standard. Its cons: This mouse has some kind of problem with rubber mats (which are the majority). On a regular table surface, it works fine, on a leather rug too, but standard non-woven rugs do not allow it to work at all. I blamed the fact that it is optical, but apparently the claims are specifically for its Pixart 3325 sensor.