Functionally, the keyboard is great. It has num lock, caps lock, and battery indicator LEDs, which I really like. The keys are typical of today's keyboards, unlike the keyboards of old that had a nice tactical click and feel. I gave it 4 instead of 5 stars because it lacks heft, and the mouse is a bit small.
I like the keyboard but I am not thrilled with the mouse. The keyboard is pretty standard maybe on the small side. The mouse is definitely too small. Someone with larger hands will find this annoying. I do. They should consider increasing the deminsions, think 6ft guy's hand.