zree white noise machine for sleeping baby portable with 10 soothing nature sounds lullaby noise maker therapy sleep easy adults travel sound machine for travel home rechargeable with 3 timer zree using zree travel sound machine can create the sounds allowing the baby to calm down faster and fall asleep more easily. it can also block the sound that disrupts their sleep, letting your baby sleep more soundly. ease your mind it can effectively help relax the body and mind, reduce stress, and improve sleep conditions. especially suitable for yoga, reading, and sleep. zree white noise machine can create a relaxing environment, and the soothing sound can assist meditation, relax and decompression. its portable design is also very suitable for outdoor use, you can easily fall asleep and relax outside. at the same time, it can also create an independent learning environment for children and improve learning efficiency. the white sound machine can help us to calm down quickly and enter the work or study state as soon as possible. no longer be afraid of being too low or loud, you can easily control the volume with just a light press of the button. the volume can be adjusted according to the scene and your needs