This baby speaker offers 27 soothing sounds, including 9 white noise, 9 nature sounds, and 9 children's sleep music, with 30 levels of volume control and a no-break point design. Use ocean sounds, cradle songs, birth sounds, rain, birdsong, streams, fans, etc. to mask distracting noises to help babies and light sleepers fall asleep easier and sleep longer. DIY Recording & Record the sound of mother talking or singing a lullaby on the device at any time to soothe the baby and promote quiet sleep. It can also record what you want to say to your relatives, friends, etc. Give them a sweet surprise! In standby mode, the white noise machine can intelligently detect the baby's crying, automatically play the music or recording of the last memory to soothe the baby's mood. 3 Timers & AMP [Memory Function] The baby sleep sound machine can be played continuously or automatically stopped for 30, 60 minutes. And our memory automatically remembers the lights, sounds and volume you had before, so