I have found that this mouse was positioned not very precise when. So it's something hakelig when you have to position fields accurately on the screen. Besides, it is a bit noisy when you click and the mouse wheel is now also nihct the hit. Who would have expected such M555 laser technology with its predecessor, will be disappointed: It's just a normal installed infrared LED. I would not buy again, am quite disappointed Logitech mouse (From my keyboard are not, which is great)
