This review is written for the first version of the sensei, which had a screen on the bottom for mouse settings, and a wire braid. The new versions of these features are simply not there, so I did not describe them. I have been using this product since 2022. I don’t see any breakages or backlashes, only the coating has peeled off. The sensor is sensitive to fine dirt and does not work well on rough surfaces, but this is not a drawback. The mouse went through many game hours in DOTA 2 (originally bought for it), LoL, CS:GO, Dirty Bomb, Valorant, Overwatch, Rainbow Six: Siege. The range of settings used was from 400dpi to 1800dpi, with high dpi, weight and dimensions start to play against you. This mouse is my ideal, but before buying I would recommend you to look at something more interesting for the same money.