Shusher™ breaks a baby’s crying spell by engaging his or her natural calming reflex. The rhythmic shush is like inside the womb, where there is a constant inundation of loud sounds from Mom’s body.· Quickly soothes fussy baby with rhythmic “shush” sound· Timer options – 15 or 30 minutes· Adjustable volume· Quality manufacturing exceeds safety standards· BPA, Latex, Lead, and Phthalate-free· Comes ready to use out of the box with 2 AA batteries installed