Not the most robust / durable design
I've now owned this product for about 2.5 years. For about the first year it worked perfectly, very consistent white noise sound. The second year things started to go downhill. It no longer had perfectly white noise, and it sounded almost as if some parts needed to be greased inside. A little grindy. Just recently the un-greased engine started to squeal constantly. I suppose all products have a life, but for an item that sits in the same place everyday, I'd expect the pure white noise to last a bit longer, and certainly for its useful life to last longer than 2.5 years.
Rating: 3 stars