I got this for my 4 yr old daughter to use when she wants to play games together on my computer. She had trouble with my mouse because her hands are so tiny, but this one fits perfectly in her hand! It is also nice that it is ambidextrous since she is left handed and still trying to decide which side she wants a mouse to be on.
This mouse is very lightweight and not especially sturdy.... if it was for use at my own desk, I wouldn't give it four stars, but it's for a little boy who loves blue and things that light up, so for him to learn to use a mouse and computer, it's perfect for our needs at this price. Would also be good for travel. I tested it briefly at my own desk and it tracks smoothly and is accurate enough for anything he'll need to do.
