Momcozy sound machine has powerful speaker driver, that can effectively block outside noise, and immerse baby in soothing music. 10 crystal clear, high quality sounds including 2 white noise, wave, bird, rain, heartbeat, fan, shhh, and 2 classic lullabies. In this mode, the preset volume, sound, and light settings will wake up automatically from sleep mode and last for 30 minutes when the baby is crying. Music and lights are gradual, the baby feels more secure by the timely soothing. Your baby can be soothed and stopped crying whether you are around or not. Soft and comforting night lights suitable for newborn feeding sessions and sleeping. Choose your favourite colour and brightness to help your child get ready for bedtime. Little Shell baby white noise machine with silicone carrying strap easily attaches to a stroller, diaper bag, luggage or crib. Compact and convenient to carry outside. Includes toddler lock feature to prevent younger hands from altering the sound or turning the unit off.