half Con:
I'm often not very careful with such devices. The laptop is often taken out somewhere else or carried around. The mouse falls already down from time to time. She has been taken no damage but with its predecessor, the cable from the USB port has increasingly removed, so that the cable then were exposed.
As I said, I'm not Mrs Carefully in person, I also have 2 kids, as it can sometimes happen that the mouse is not always treated mouse justice.
Nevertheless, I have bought the predecessor only in June and approximately 6 months not long dwell in our household.
So I'm going to keep a little successor in mind in this regard ;-)