This sound machine is packed with great features I love. It is a compact device which makes it very portable and you can power it with the cord or batteries. You can run it all night or you can chose from 3 timer settings. The sound options are very soothing. My favorites are the brook, rain and ocean. It really has helped me fall asleep faster. When my 7 month old granddaughter comes to visit she uses it for her naps. We always had a hard time getting her to go to sleep and stay asleep but not anymore. [This review was collected as part of a promotion.]