Okay, after about an hour of use, I have a small review. I like both the keyboard and mouse a lot. They are both very responsive, and do not lag if they are being used. I was able to go into another room, and had my brother verify that the mouse still worked, so I can verify long range. The mouse works very well in games. The only thing about the mouse that I do not like, is the lack of application specific mapping in Intellipoint Pro, like with the Wireless Intellimouse Explorer. There is only one thing wrong, but is is more of an annoyance than a problem. When I leave bith devices idle for about 10 minutes, they go into sleep mode, fine; but then when I go back to use them, there is a slight delay for about a second or two. The mouse doesn't move for about a second, and the keyboard doesn't type what you just typed in for about a second. But I understand that becuase it is a woreless technology, it must employ some powersaving technology. So I guess that is the powersaving feature. But all in all I love both devices. That blue light on the tranceiver, and the tranciever itself is much nicer to look at than the previous models. So that was my small review on the device. The only thing I miss from my Office Keyboard, is the scroll wheel, but that is ok.