Quality problems led to me returning 2 of them [SEP] The product seemed to work well -- the vaccum feature worked as advertised, and I was pleased.  But, as other reviewers complained, it was very difficult to place the guide back on the unit.  Within a week, I managed to break the unit where the guide could not be adjusted anymore.  After returning the unit, the 2nd trimmer I received worked fine, but was much much louder than the first.  Something must have been wrong with the motor because when I pressed it to my face, the motor would slow down.<br /><br />I bought a Wahl vaccum trimmer instead and have been much happier (plus I saved $10).