If you are looking to sleep through the night, this is the product for you. My husband and I live in an apartment building with our bedroom at the back facing the backs of several other buildings.
There is always noise coming from several of the other buildings as well as airplanes flying over head and the hourly city buses/trucks that drive by in the front. When we moved in our sleep was always interrupted by these types of noises.
This little machine has made sleeping through the night possible. We don’t worry anymore about being woken up b/c it masks these noises so well we forgot they ever existed. This is money well spent!

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However, I also purchased this product to try to mask the loud bus/truck traffic noise during the day from the stop-light AND the bus stop out of the front of the building.
This noise is unfortunately way too loud to make disappear, but the better sleep I have been getting has made this noise much better to deal with b/c I am no longer over-tired and cranky. I still look forward to great nights sleep. All I can say is BUY IT!!!