I think I bought my mouse last year and recently it just didn’t work out right. The cursor just doesn’t move at all, it is just so sudden and at that time I don’t get any chance to buy a new one because I was still working. Good thing when it was finally gave up, my husband arrived and he let me used his mouse. I mean if he won’t use it I can use it. When my husband went back to the states, he left me his mouse and it is the one that I am using now. So far it served me very well; I hope it would last here with me.