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 pleasureauditory nbsp;Timer and memory function: three timer options: 30 minutes, 60 minutes and repeat playbackThe white noise machine will automatically turn off when the timer is off, or it will loop until it is turned offThe nextOnce you turn on the white noise machine, it will keep the last sound and volume settingGreat Sleeping Companion: The sound machine helps drown out background noise, help babies relaxAnd it can also relieve the problem of adult insomniaNatural soft sounds create a pleasant sleeping atmosphere,which allows you to feel calm and fall asleep softlyPortable and Compact: The white noise machine is lightweight and small in sizeGreat for home, office, especially travelWhen you are alone, let the white noise machine always stay with you anywhere and anytimewhen