Soothing Nature Sounds: There are 16 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. 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. Easy to use 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.