Sadly, I wouldn’t recommend this product. The feature combination sounds wonderful but I have now had three in the last two months. The first two were ordered through a department store but after a replacement didn’t work and a restock on Homedics became available my third came from the site. One of the oils arrived half empty in two boxes and after plugging each one in for a few minutes the sound machine has an annoying buzzing noise that is as loud as the  selected sound. Unfortunately, it hasn’t worked as I had hoped.