I've been using this styler for about 10 years now. It has three heat settings and comes with 5 attachments. A brush, nozzle, iron, adjustable curler brush and a volumising head. You can see them all in the photo.
I must say that I have fine hair that is easy to blow dry and straighten using this styler. If your hair is difficult to straighten, thick or coarse then this straightener won't work for you. As for girls with fine hair this styler is perfect.
For one thing it is a lot easier to straighten your hair with the brush attachment, instead of having to joggle a dryer and a brush in the other hand. As a plus, the highest setting in this styler is more than enough to yield perfect results without causing any damage from over heat like with professional hair dryers.
My mom bought this when I was about 12. Am 23 now and I still use it. We both do actually. In fact she owns two and I own one :)