Review on USB Rechargeable White Noise Machine - 42 Soothing Natural Sounds with Timer for Baby Adults - Non-Looping Sleep Sound Device for Travel, Noisy Cancelling, Office Privacy, Sleep Therapy - Includes AC Adapter by Becky Gallegos

This is a great little sound machine. I use it every night and take it with me everywhere. I prefer to keep the same settings, and when I unplug it to take it everywhere, those settings are somehow saved so I don't have to find my favorite sound every time. I use this to block outside noise in the city and make constant noise so I can sleep. My dog even loves it! The only downside is the little blue light on the power button that glows when it's on. I need absolute darkness, as any light disturbs restful sleep. I just close the button every night to fix it. This machine deadens noise and helps me get used to sleeping in different places more easily when traveling. Excellent purchase!