Great product - but be careful!
I was really excited to get this trimmer.  I had an older model that my son took to college and I was looking a bit scruffy.  The first time I set it to "4".  I was used pushing down hard to get an even trim with my old one.  Well with this new one I pushed so hard that the trimmer length setting was reduced.  I didn't realize what was happening until it was all the way down to "1".  I wound up shaving it off.  I regrew my facial hair and haven't had any problems since.  I just don't push as hard and I make sure it is firmly set on the length I want.  BTW: the vacuum feature works great.
Rating: 4 stars