The Sky Light with Sound Therapy by Conair has six theraputic sounds to calm and comfort your baby. The soothing sounds include rain, ocean waves, heartbeat, summer night, forest and babbling brook. You can control the volume at the level that is appropriate for your baby. The machine also has five available light-up colors, including light green, blue, dark green, red and purple. It is battery operated so you can easy place it in any spot in your house.