After two months of use, I must be very, very disappointed with this Logitech. Until a strong fan of the brand (I have only had excellent products at home ...), the purchase of this mouse forces me to revise my opinion. Even if the ergonomics are excellent, very major weakness lies in holding the power management: in short, if you buy this model (! And others in this brand ??), remember take a few packages with batteries because it will ... you'll need it. In two months of use, I had to consume three pairs! Fortunately there was a "super energy management system" made in Logitech. Not very disappointed the product ...
