The Baby Einstein Sea Dreams Crib Soother projects calming lights and plays melodies and ocean sounds for more than 25 minutes to help soothe infants. It fits most crib rails (~10.5 in circumference) or sits on a nightstand, and offers four customizable modes plus a Drift Off function that gradually dims lights and sounds. High and low volume settings and a remote control (up to 12 feet) make adjustments easy, and babies can turn the unit on themselves.