Sea life Musical Mobile by The Peanutshell helps to promote baby's auditory development, motor skills and visual stimulation. Our expertly designed nursery must have features plush whales, a dolphin, octopus, and starfish characters in various blue tones under scalloped aqua arm covers. The digital music box plays snippets of 12 different lullabies to soothe your little one gently to sleep. Easily switch music on/off or between songs with the simple touch of a button. Two velour arm covers in light and navy blue are provided for a customized designer look. This item coordinates perfectly with our Nautical 3 Piece Crib Set and 4 Pack Fitted Sheets to create the prefect ocean themed baby room. Battery operated. Requires two AA batteries that are not included.