I used it for a year and a half, I am very satisfied, no glitches and failures were noticed, the best choice in this price segment Its pros: Adequate price, very comfortable in the hand, has several modes of operation (5), fast response. Different cons: hard wire, problematic cleaning of the space inside the mouse, when assembling / disassembling, you need to have three hands to assemble it back. need a rigid fixation of the position of the wire