In general, there are no critical complaints, for such a price, physical shortcomings are explainable, but the software could be fixed, it's unpleasant.
Pros
The mouse sensor is not bad, you can feel the accuracy and detail with which movements are transmitted - I'm used to it. The elastic on the side is good, the plastic looks cheap and does not feel like steel siries, but it also costs 2 times less! The mouse wire does not twist, the usb plug is gold - I don’t know what kind of metal, but I think it’s better in conductivity, the sensor polling frequency is 2022Hz.
Cons
The backlight is not so much needed, but the mouse does not look so boring with it. Crooked is still software. Glitches with the backlight settings can be, pressing the wheel sometimes does not work for a long time, the vertical play of the left key is also in the review that I saw with me. When you turn off the computer for the night, the mouse may no longer turn on until you insert it into usb again. Macros only in the game do not work on the digital block, but if the game settings allow you to duplicate the control for macros on letters.