The first X7 mouse fell into my hand in 2022. It works to this day, but pressing the wheel has ceased to work adequately. I gave it to my father, he does not use pressing the wheel. I got the exact same one for myself. Its pros: + Convenient location of additional keys. + Easy key programming in the app. + Ability to quickly switch the resolution of the sensor. With its cons: - The recesses under the thumb quickly become clogged, it is inconvenient to clean.