There are 7 types of white noise, 4 types of fans, 4 nativity songs, 14 types of rain sounds, waves, trains, stardust, meditation, natural relaxation sounds, etc. The sound rhythm helps you fall asleep, and white noise can effectively mask disturbing or surprising sounds and protect your sleep quality. You can even connect your smartphone to play other soothing sounds or music, FM radio, and your favorite audiobooks. [7 Small Night Lights & Adjustable Brightness] The white noise machine has a unique 7-color night light and adjustable brightness. It can be used for desktop lighting, changing milk powder, feeding diapers, parent-child interaction, or bedside sleep. Sleep, relaxation, yoga, party, dinner, cycling, and camping! 5 Timer Settings and Memory Functions There are a total of 5 timer options, continuous playback, 30 minutes, 60 minutes, 90 minutes and 120 minutes, you can set according to your needs. When the automatic shutdown is approaching, the sound will gradually weaken and