I bought this because someone recommended it on a Facebook group I’m in. I figured I’d give it a go because of its affordable price. I was nervous at first wondering if it would benefit me. I’ve been struggling with sleep for a long time and have tried everything, magnesium, calming cocoas, teas, cbd, thc etc. but nothing has really worked. I got this and decided to set it up on a continuous loop of the 528hz. I am having the best sleep I e had in forever. I still wake up occasionally but I’m able to fall right back to sleep. Even my husband commented that he’s noticed he has been sleeping better. I love its compact size and portability. We are going on a trip and I plan on taking it with me! I love this little mighty machine!