1、10 Natural Sounds: Ten natural sounds that are perfect for you sleep can help improve your sleep and soothe your mood by effectively eliminating noises that may disturb or distract you. 2、Automatic Off Timer and Volume Control: Choose to continuously play relaxing sounds on this sound machine or choose automatic off timer, the timer has three options, 60, 120, or 180 minutes. Use the convenient volume control button to adjust the volume. 3、For Baby: Add these rhythmic sounds to your baby's sleep routine to help them fall asleep faster and sleep longer, is the perfect must have baby voice machine. 4、Easy to Use and Kid Safe: Comes with a USB cable for convenient charging. The simple interface is easy to use and can be operated with one hand. 5、Small and Portable: This white noise sound machine is lightweight and compact, can easily fits into your purse, bag or carrying case, portable.