I was just telling my husband yesterday what a cool product this is and how much I like it. I gave 4 stars because it took an hour to set up initially and the one time I removed the USB it took another hour to set up. I needed to keep my corded mouse and keyboard in the computer and then reset the windows computer to get the USB to be recognized, it took about 10 min of not playing with it to finally sync. Keyboard works well and I have only needed to charge it once in a months time (I sit at my desk about 30 hours a week and type small reports and emails). The mouse has not run out of batteries either (thanks for the previous peoples comments that the mouse has 2 AAA batteries, while the keyboard is rechargeable). I have not used any of the function keys so I cannot speak to the button mixup that several people commented about. All the normal keys work well.