I advise you to pay attention to the mice of other brands. In my opinion, this copy is not worth the money. After completely getting breakdowns "accidentally" flew off into the wall. 2 times. Its pros: In terms of filling, Pixart 3389 works out at 146% I did not reveal any breakdowns, lags and other demonism. The shape, although convenient, is still not for everyone, so I advise you to feel it in the store before buying. Has some cons: Quality at the level of bloody, after 11 months of active use, the mouse wheel began to live its own life. A month later, a double-click on the LMB appeared.