Cloud b introduces Mama Koala & Baby to our collection of sleep-inducing sound products best known for the award-winning Sleep Sheep. Hidden inside Mama Koala is a removable sound box that plays four soothing sounds. Included is an adorable, plush Baby Koala rattle, designed for little fingers to grab and hold during playtime. Plays 4 soothing sounds: Mother's heartbeat Spring Showers Ocean Waves Whale Songs Plush Baby Koala Rattle Detachable plush Baby rattle is soft and safe for little hands Plush character and sound box features: Two sleep-timer options: auto shut-off in 23 minutes or 45 minutes Removable sound box VELCRO® brand closure strap for easy attachment to crib or bed Requires 2 AA batteries; batteries are included Creators of the twilight turtle and sleep sheep, Cloud B specializes in products that help children sleep with white noise sound products and light products that turn.