I have been using this mouse for several years only in white. I am writing a review for the black one, because it is still on sale and does not differ in anything except the color. The software, although convenient, easy to use, but there are failures, for example, if you plug a mouse or headphones from Logitech into another port, something may stop working, even reinstalling the software does not solve this problem, so it’s better not to swap those plugged into USB devices. Saw some complaining that DPI settings get reset after a reboot. But I have no such problems. By the way, you can set the default DPI in the settings. Reliability. Perhaps for the sake of a comfortable click (the click is pleasant tactile and rather quiet), the micros inside are made of an alloy that oxidizes quite quickly (perhaps excessive heat and sweating of the hands aggravates the situation). Well, the consequence is a double click, false positives. Oxidation of contacts probably occurs even more often than every six months, which is why it is necessary to disassemble the mikrik and clean it from oxidation. You have to disassemble the mouse by peeling off the legs and unscrewing 4 bolts. The legs are two-layered, which is why I ruined the first pair of legs. I ordered new ones with frayed cord. The mouse coating is quite pleasant, matte. But the gum under the little finger wears out at an incredible speed and the hole is rubbed. If you decide to wipe the mouse with alcohol-based products, the matte finish will tell you bye and peel off safely. The wheel is clogged with dirt, a lot of dirt sticks to the side buttons. I wrote a review because I decided to look for something new, because for so many years, in addition to mikriks, other buttons that are responsible for the middle mouse button and mode switching began to fail.