This Zazu portable sleep sound machine combines proven womb-like noises and soothing melodies to help newborns settle and fall asleep more easily. This shusher and white-noise soother offers six selectable sounds — shushing, heartbeat, white noise, lullaby, ocean, and gentle lounge music — with adjustable volume and cry-activated playback. This auto shut-off sleep aid powers down after 20 minutes and runs on 3 x AAA alkaline batteries (not included), making the compact speaker ideal to attach to a stroller or travel cot. This sound soother features a 100% ABS module and a 100% silicone control panel for a soft, premium touch that stands up to everyday use. This cry-activated sleep device creates a familiar, womb-like atmosphere to calm and soothe babies wherever the family travels.