Get the rest that you need with the help of the HoMedics SS-2000 Sound Spa. When you are fatigued, it is designed to give you the calm you need. This relaxing sound machine has multiple features, giving you a customized experience each time. Turn it on to create a comforting environment with six different nature-based noises. Choose from waterfall, rain forest, ocean and more. This Sound Spa portable is battery or AC adapter operated, so you have versatility in your use. The machine is specially constructed with a built-in timer that automatically turns off when you want it to. The slim, lightweight construction makes it simple to take with you on the go.