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Title: DON'T BUY THIS PRODUCT
Review: My wife and I are having twins and we bought this early on (month 3). The only heartbeat I've ever hear is my own hearbeat, testing to see if this actually works. My babies are perfectly fine, and when I go to the doctor's office, they're always fine...but with this device, the only thing I get is disappointment. DO NOT BUY THIS PRODUCT.
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