Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This thing makes me so mad!!!!!

I don't generally write reviews but my repeated frustrating experiences with this thing compels me to do so.It seemed like a good idea -- the vacuum feature and the adjustable trim height, but when I use this thing, the adjustable head comes loose, which usually results in the blades going directly down to my face. Not only painful but it mows my beard down to the skin. Ouch and ugly!! Then the vacuum doesn't work all that well, and much of the shaved hair bits end up on my face, on my shirt, and on the floor.The one thing I do like about it is the smaller trim blade, which is super handy, but I have to give this a bad rating simply because it's unexpectedly mowed down parts of my beard so many times.I'd avoid this one if I were you.