Arrived with a damaged pad + LEFT MOUSE BUTTON BROKEN/LOADED. Watch my video: I can't even click the left mouse button. The overall quality is what I would expect from a rebuilt model. Looks like they didn't store it properly in the warehouse and the California heat took a toll on it. Guess I'll go back to my Rival 300 while I get this back and look at the Logitech/Zowie options.