Review (2/5): Not impressed
I must say that I disagree with most reviewers on this product. I have several problems with the design which I would like to share.
First, a disclaimer. The product title says that it is a hair "trimmer" and not a "clipper". Perhaps I did not see the distinction at first, but I see that others purchase this unit as a clipper as well. So, as a trimmer (used very frequently and with very short hair trimmings) this unit may work for you. But even as a trimmer, if the hair is cut at any length (and there are 9 settings to the guide), this thing is useless.
First, the "on" and "turbo" buttons are too easy to push while handling, and I'm constantly startling myself with the turbo setting (it is a little loud). Also, I find that the guide/vacuum design is poor. This may work OK if you are trimming short guide settings, but if you get a clump of hair in the guide, which happens constantly with me, it will block the tiny opening for the hair cup. The vacuum is not strong enough to pull the hair in, and it clogs the whole works. If you do not notice this, the blockage will prevent the trimmer from trimming, and you may think that a lower guide setting is needed. You can see how this sets you up for a scalp job when the low guide setting is finally low enough to make a cut. I just find the whole set up "gimmicky" and I will take the old standard guides and no vacuum any day.
It does have a strong battery and if you are just lightly trimming a mustache or a beard, it may be the right choice for you. I think people like me would not be disappointed (and would not have purchased the product) if it had been called the Philips Norelco T980 Turbo Beard and Mustache Vacuum Trimmer. Long title, but descriptive enough to avoid purchasing the wrong product.