I've had two of these. first did not work and the second died this month after 14 months of owning it.it's a really nice little system when it works. Very comfortable and all, but after 12 months the mouse started sticking, there was a wireless response delay, and finally it just quit altogether.i would not buy this item if I could do it again.I've had this longer now. I returned my first one and the second unit I got has been GREAT. So I thought honesty required I come back and revise. I'd give it 4 stars today