Bought 2 - both stopped working. I do not recommend this mouse. I bought one and one month later it stopped working. For the price, it wasn't worth returning so I just bought another one thinking I got a fluke bad one because I do like the light weight and feel. But the second one stopped working after a few months. I tried changing the battery (with 3 dif sets of batteries in case my batteries were bad). I tried it on my desktop and my laptop. It just stopped working.