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Title: Doesn't work well.
Review: I bought this recently, and when I received it I tried it out and could barely hear my own heart beat or anyone elses. I Thought it might be the part where you put in your ear, so I tried the other ones it came with, and they killed my ears, I could hardly keep them in for even a minute. I bought it because I thought the BP cuff I ordered didn't come with one, but it ended up coming with one and it is SO much better than this one. When I tried it for the first time, I realized how defective this one was.
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