quality problems led to me returning 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 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 downi bought a wahl vaccum trimmer instead and have been much happier plus i saved