I hoped that for a lot of money I got a good mouse, but after 3 months of inactive use, the scroll began to fail. support waved it off, referring to the seller for a solution to the problem. The F5Store seller <sales@f5store. Ru> also dismissed it. They advised me to contact logitech support - I turned, they recognized the mouse as faulty and the warranty case was a verdict for replacing the mouse, but at the moment logitech does not have delivery due to the situation in the country. Conclusion no one fulfills the warranty obligations.