Features: 1. The product has 8 white noise music: white noise, thunder, wind, brook, birds, night, rain, ocean, so you can choose sounds according to your preferences and you need to create a quiet environment so that you fall asleep quickly and rest completely. 2. The timer to provide you with timed shutdown control: Optional automatic shutdown after 30min, 60min, 90min, energy-saving, and environmental protection. 3. Not only for sleeping: Our white noise sound machine not only hides noise, improves the quality of sleep, but is also suitable for use at home, in the office, in a bedroom, in a nursery for babies, or anywhere you want. 4. The product size is only 90x90*40mm, It occupies a small space on the bedside table and can be easily put in your bag or suitcase, which makes it the perfect travel companion. 5. The product comes with a headphone jack, which is convenient for you to use in a public environment such as the terminal/office and will not interfere with others. Specifications: -Built-in 8 kinds of white noise:white noise, thunder, wind, brook, birds, night, rain, ocean; -Color:White; -Material:Plastic; -Automatic timing selection:30, 60, 90 minutes; -Working voltage:DC5V; -White noise power:2W; -Size:Approx. 90 x 90 x 40mm; Package Included: 1 x White Noise machine; 1 x USB cable