Perfectly Shield All Noises for Your Baby: SPN01 white noise machine can help you isolate all the noise, such as annoying neighbors, barking dogs, car horns, vacuum cleaners and washing machines. The warm night light also makes the baby no longer afraid of the dark. Let your baby have a comfortable sleep is so that you can have a comfortable sleep. Memory Function& Easy to Operate at Night: The memory function will remember your last setting of lights, sounds and volume. When you restart it, it will automatically revert to the last setting. At the same time, we have designed the switch buttons in a protruding form so that you can find the switch buttons by touch even in a dark environment. (The memory function must be plugged in to take effect, because there is no built-in battery.). Adjustable Brightness Warm Night Light& Timer: The plug-in sound machine has a warm night light with 3 levels of adjustable brightness, providing you with enough light for nighttime diaper changes and feedings without disturbing your baby. The white noise machine also has a timer that can be selected within 30, 60, 90 minutes. The sound and lights of the noise maker will automatically turn off when the timer is up. 7 Colors Night Light for Light Therapy: This sleep sound machine has 7 different colors of night light. This colorful night light can not only cooperate with soothing white noise to give you a more colorful and more comfortable sleep environment, but also can decorate your bedroom. While bringing you a comfortable sleep, it also gives you a more cozy bedroom. 19 Mixable Soothing Nature Sounds: SPN01 White noise machine includes 3 White Noise, 3 Fan sounds, 3 Lullabies, Wave, Rain, Brook, Bird, Campfire, Cricket, Train, Fetal heart, Heart beat and Meditation. You can mix these sounds to suit you and your baby's preferences, such as a train on a rainy day, a bonfire at the beach or the sound of birds chirping by a stream.