Sweet Dreamz On the Go™ – Travel and On-the-Go Night Light and Sound Soother – Cat. Sweet Dreamz On the Go™ – Dog: this cute travel companion features 4 nature sounds and 4 melodies to calm children and promote peaceful sleep. Three different modes allow you to select the perfect setting to calm babies and ease them to sleep, wherever bedtime may land. The Sweet Dreamz On the Go includes a Smart Sound Sensor. If your baby wakes up and makes any noise, the sensor restarts the sound to help the baby fall back asleep. To help conserve battery power, the nightlight automatically shuts off after 15 minutes and the sounds and lullabies automatically shut off after 45 minutes. The heart-shaped clip allows you to attach it everywhere.