I be glad I take a while to write this review . when I get this product I be very satisfied with it be performance , it do not require any installation and work perfectly for almost 6 month . however , in the time I need they the most , the mouse and the keyboard stop work for no reason . I think it be time for battery replacement but nothing happen with the new battery . after many attempt to make they work I realize the receiver be damage , so even think the mouse and the keyboard be still in good condition , they be completely useless . so there it be , seem like a pretty good deal but be not so reliable .