I bought this mouse upon release early last year along with the charging mat. Never needed to plug in a cord the entire time. It was rediculously responsive, easy to use and dead accurate. An awesome gaming mouse. I had not a single complaint. However, after about fifteen months of use, I started to get a double click issue on the left button, then on the right. Click and drag was useless and was impossible to use in gaming. Luckily, Logitech stand behind their stuff and offered a two year warranty. This morning, Mighty Ape offered a credit or refund (not a replacement). I have since found on other sites that the button issue is common and a problem with this model. Such a shame… I now have a charging mouse pad I can use for nothing.