Soothing Nature Sounds: There are 6 kinds of nature sounds available, including white/pink noise, fan sound, rain, thunderstorm, forest, cricket, waves, streams, heartbeats, etc., to bring you the pleasure auditory. Timer and memory function: Three timer options: 30 minutes, 60 minutes and loop play. The will automatically turn off when the timer is turned off, or it will loop until turned off. The next time you turn on the , it will retain the last sound and volume setting. Great Sleep Companion: The sound machine helps drown out background noise, helps babies relax. And it can relieve adult insomnia problem as well. Natural soft sounds create a pleasant sleeping atmosphere, which makes you feel calm and fall asleep gently. Portable and compact: The is lightweight and small in size. Ideal for home, office, especially for travel. When you are alone, let the always stay with you anywhere and anytime. when.