obtained 35 instead of a price that is closer to the top 70. So for the price. For the product itself, I find the imprecise pointing at the moment, but I have only 2 days of use. I am quite convinced that we made it. Instead of the hand flat, palm down like a mouse, this mouse M570 lets do a little flick of your wrist to position the thumb higher than the little finger, so rotate slightly the forearm, and thus have a more natural position. I do not put 5/5, because the correction is rather "soft". I wish the forearm takes a more natural position. The other model that I looked at, it is the Evoluent vertical 4. I did not dare take the step, but I think that the vertical position of evolve even better. Problem: the price at which it was offered was well above 35 ... So finally, I'm pretty happy with this compromise.
