This portable white noise machine has been great. It has a lot of sound options to fit my mood or need. It has 36 sounds so there is something for everyone. I’ve used it for sleeping, relaxing and just to have background noise. It’s compact size is great for moving around rooms and for taking with on trips. I like that it has different timer settings, that it is powered by rechargeable battery or USB cord and I like that it recalls the last sound and volume. I like this product and recommend it.