Features： 1、Various Sounds: White noise machine with various calm sounds, suitable for many people, let you immersive full release of body and mind. 2、Improve Sleeping: White noise sleep machine adopted sound source and special acoustic principles design, which can effectively promote sleep quality. 3、Noise Blocking: White noise not only promotes sleep, but also blocks out the distractions of external noises, helping us concentrate in school and work. 4、Colorful Light: Sound white noise device adopted night light design, with 7 colors, allowing you can easily find things in the dark and create a warm environment. 5、Widely Use: White noise device can be used for sleeping, feeding, and even reading, suitable for use at home, office, dorm, baby nursery or anywhere else you want. Specification： Item Type: White Noise Machine Material: ABS Charging Mode: USB Port Battery Type: Lithium Battery 2000mAh (Included) Package List： 1 x White Noise Machine 1 x USB Cable 1 x Manual