Sleep is an essential part of human life, and its importance is as stated in a report by the World Health Organization, "sleep, like air, food, and water, is the basic necessities of human life.Product parameters1. Parameters1.4-AA battery2. Voltage 5VDC 300mA3. Rated power 1.5W2. Features1.9 kinds of white noises: rain, sea water, thunder, wind, running water, light music, guqin, sounds of nature, prenatal music2. Automatic timing selection: 15, 30, 60 minutes3. Volume control knob4. Lightweight and portable, easy to carry when traveling5. The beautiful and beautiful sound makes you fall asleep peacefully3. PackagingGray card color box packagingComes with 1 USB cableBox size: 16.5x16x6.3cmSingle pack weight: 270 gramsSpecial Note:1; The sound of Sxdthy's white noise sleep instrument is like the sound of nature. It may take some time to get used to it. You can adjust the appropriate audio frequency. The adaptation time varies from person to person, about 2-5 days.2. Placing the white noise device away from the sleeper can effectively fill the room with white noise. If the noisy sound is coming from a certain direction, then you can place the noiser between you and the source of the noise.3; This "noise device" uses physical therapy (sound therapy) to promote sleep by improving the sound of the sleeping environment, which has a good effect of relieving and improving the group with "difficulty falling asleep" and mild insomnia symptoms, and can also help users improve Work and study attention. But this product is not a substitute for medical treatment!Use Note:1. Keep away from water and fire sources and high temperature environments, and avoid the machine being exposed to water.2. Wipe the dust with a damp cloth. Do not use liquid or abrasive to clean3. Unplug the product from the power outlet after