Calming Natural Sounds: There are 16 kinds of natural sounds available including white / pink noise, fan sound, rain, thunderstorm, forest, cricket, waves, streams , heartbeats, etc., to bring you pleasure auditory. & nbsp; Timer and memory function: three timer options: 30 minutes, 60 minutes and repeat playback. The will automatically turn off when the timer is off, or it will loop until it is turned off. The next Once you turn on the , it will keep the last sound and volume setting. Great Sleeping Companion: The sound machine helps drown out background noise, help babies relax. And it can also relieve the problem of adult insomnia. Natural soft sounds create a pleasant sleeping atmosphere, which allows you to feel calm and fall asleep softly. Portable and Compact: The is lightweight and small in size. Great for home, office, especially travel. When you are alone, let the always stay with you anywhere and anytime when.