Definition: In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.
Input: I got these because I read good things about them from multiple sources. I believe that all of those sources never used them for phone calls. There is basically zero noise cancellation. Walking on the street, in a store, or sitting in a quiet room, people have difficulty hearing me. I'm told that outside noise is louder and clearer than I am. I've tried adjusting the position of the buds in as many ways as I can think of, and nothing helps. So if you're looking for clear phone calls where you don't have to raise your voice for people to understand you, look elsewhere. However, hearing other people is no problem. Listening to music is wonderful. If you wear these without active sound playing, you can hear a slight hiss if everything around you is quiet, but it's not really an issue in my opinion. If you're active, they will need constant adjustment. You'll feel then loosening as you move. I luckily caught one of the buds before it fell out of my ear once. I use the medium size earpieces, and tried the large size, which were painful after a while. All in all, they're good for the price if you want them solely for listening at a desk or walking somewhere. For phone calls, working out, and running, look for something else.

No noise cancellation, contrary to what is advertised.