This is probably the best review I'm ever going to write for a Microsoft product. With only a few cm distance between the keyboard and receiver I'm struggling to write just a few sentences here, meaning the signal strength is half as long as one of my number twos. This also means that after about a few days of regular use it then becomes weaker and disconnects every 5 seconds - literally! The only thing I can give the gruesome twosome is that they look nice and have a good feel which is why I gave them a 2 instead of a far more likely 1. So if you want to buy something of equal uses as my poo, then go ahead but be warned as this is a terrible product.
The keyboard in this product is nice, easy to use with a nice range of handy buttons at the top. Also the keys are nice sizes, not too small or too big, with good positioning.
However the mouse (even 2 Foot away from the reciever) suffers from conenction issues, and has a really poor battery life, i changed mine twice in a fortnight.
You can definitely tell this is a cheap piece. There is no weight to the mouse or keyboard, and the mouse muttons feel cheap and plastic. But considering the price this keyboard and mouse is fine. It will do me for a couple of years anyway.
Also, range not great on mouse, 4 feet maybe?