I took it as a second mouse along with logitech mx master 2s, which, despite the reviews, seemed extremely uncomfortable to me. Razer in my case is much nicer in the hand, but the build quality in this case is worse - many here complain about the double click, I have no problems with this, but the right button, when pressed closer to the center, makes a metallic rattling sound. The side buttons are comfortable, from now on I consider mice with only two buttons on the side under the thumb (I didn’t like what they did there at all). I don’t use the reduced sense button at all, fortunately, there was a plug in the kit. I would also like to touch on the software that is installed in the kit. Personally, it seems to me too heaped up, but it does not matter. Another trouble - recently, at the start of the system, the software was thrown into the BSOD, when trying to start the razer central (!). As I understand it, with some ate, the memory began to leak, and the problem was fixed on the same day - a hotfix arrived, but I managed to catch a few bsods on win10 pro x64. Stumbled on the Western Internet for the same symptoms. An unpleasant aftertaste remained. Based on the foregoing, there are two kinds of impressions about the mouse. On the one hand, it seems to work and does not cause discomfort when used as such, on the other hand, I would not recommend it to others. Most likely, later I will change it to something more sane of a similar form factor (it would be something). If the software starts to work out again, then this "later" will come instantly. 12/08/20: it was only worth mentioning yesterday - today it began to fall into bsod again. Based on my observations, there are two softwares in autorun - Razer Synapsis and Razer Device (somehow, this software has been irretrievably demolished). When Synapse decides to ate - the second process eats up all the memory, in my case - my 16GB ddr4, judging by what it eats radically, up to bsode - there is a memory leak in this section. I found the same stories with proofs from the magazine on reddit and foreign tech forums. The software is demolished, the mouse goes into the auditorium (garbage).