Amazon.com: SNOOZ White Noise Sound Machine - Real
This is the second one that I've bought. Now, for my son's bedroom. It's a little bit expensive, but the sound is good quality. I have been using the white noise machine for 1 month while I sleep because I can hear the noise of the train (subway) from my house. The machine works good. After 3 days, I started sleeping very well.
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