Plays 3 natural sounds as well as 3 lullabies to help your baby sleep. With a rotating picture projector it can display the images on either the ceiling or wall, comes with three image discs. Comes with a 15, 30, 45 or 60 minute auto-off timer. AC/DC Power adaptor provided (not battery operated). Soothing Sounds: Heartbeat, Gentle Rain, Ocean Waves Luallbies: Twinkle-Twinkle, Rock-A-Bye-Baby, Brahm's cradle song Images: Sky, Forest, Sea