Fit is great, pressure point of the keys is also very satisfactory, and the processing (cable sheathing around the cable) makes a good impression. There are 4 different DPI modes which can be adjusted using the supplied software at will, and are indicated by different colors of the LED also freely selectable.
Sometimes I have the feeling that they are not quite as sensitive as my ancient Logitech MX510 works, possible white lies this simple but also in the conversion - If confirmed, there are all 5 star and I delete the last part of my review.
