I originally thought this was going to be a piece of junk because it was the most competitively priced mouse/keyboard combo that included a mouse with side buttons. Side buttons which I have grown to need for my web browsing.
I am pleasantly surprised to say that this is my personal favorite keyboard of all time thus far. The keys don't have sharp edges, are quiet and responsive, but also have a sort of "expensive" feel when you press them. Cushioned and springy is the best way I can think of to describe it off the top of my head. The return key is slightly oddly positioned and results in lots of \ instead of return. It takes one AAA battery (included) and, of course, has two flip out pieces on the bottom to angle the keyboard up.
The mouse has a few extras like its built in dpi adjustment and two side buttons used mainly for forward and back during web browsing. Underneath the mouse is an on/off switch, a spot for storing the USB adapter and the door for the two AA batteries (also included). No complaints about the mouse here. It's full size, has all the buttons I wanted (and then some), and doesn't feel like it will be falling apart anytime soon.
Overall, I gave the thing a 5/5 because it was inexpensive, convenient, comfortable to use and had everything I was looking for. Only time will tell if it stands the test of... ah... time, I guess.