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Title: You get what you pay for...
Review: At first I could only hear out of one side but then I kept trying different things and reassembling it. And to make sure it wasn't just me or my ears, I had someone else take a listen and they encountered the same thing. So although the sound is kind of faint(you have to be really quiet to hear your heartbeat well), after reassembling it, it appears to be working fine in both ears now.I guess for the price, I can't expect much more and it wouldn't be worth the shipping to return it. Like the old saying goes "you get what you pay for".
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