Instruct: Classify a given Amazon review as either positive or negative.
Query: doesn't trim very well

Maybe it's just me but I don't get very good trimming with this. Without the attachment it'll shave off hair any where, but with the adjustable attachment I find I have to go over and over the same spot many times for it to cut all the whiskers to an even level, and even then it's still uneven. I have Wahl hair clippers that do a much better job, just one pass with an attachment. I use the hair clippers for most of my beard now and just use this trimmer to clean up the edges and a few hard to reach spots (like right under my nose) Also they are very loud. I'm wondering if I might find them more useful if used with a comb without the adjustable attachment. It's also worth noting that my beard grows very thick and dense from my cheeks all the way down my neck so I'm probably an extreme case.