Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works great

The vacuum works better on this one than my older Norelco. I'm not sure why I need to press 2 buttons to get the good vacuum speed. Fast and easy to use. When putting the comb back on the trimmer, make sure it responds to the height adjustment ring. It's all too easy to put the comb on wrong which is typical of the Norelco beard trimmers.