This white noise machine by #Lemouchet works great. I previously purchased a white noise machine so I didnt have to keep my TV on all night. My 8 1/2 year old grandson liked it and since it was the only way to keep him in his bed I gave it to him. This one has more usable options to it. It has a 3.5mm jack with jack volume control on the unit, 15 sounds of which my 2 favorites are rain and thunder. For $31.99 this will pay itself over and over. Well worth the purchase.