In general, an excellent product if you buy it within seven thousand (although this is not cheap). The impressions are positive, but compared to the mx master series, the ergonomics are not very good (that is, for example, it will be uncomfortable for lovers of a rug with a wrist rest), it is sharpened for using a carpet without a wrist strap. Initially, without weights installed, the mouse creates a feeling of a weightless Chinese “g”, but when you install a weight, it acquires the necessary weight, the body materials are pleasant, but do not have a pleasant roughness like in the mx master series, however, you can’t call the body slippery either.