KaZoo MyPhones have built-in volume-limiting circuitry that keeps the sound pressure down to levels recommended as safe for young ears. Exposure to excessive levels of sound is more than a nuisance. It's a health issue, especially for children. KaZoo MyPhones use a built-in, always-on sound-control circuit to cap peak volume levels at 85 decibels. That's the maximum level recommended by many auditory health organizations in the U.S. and abroad. And, of course, KaZoo are kid-friendly with fun animal designs and durably constructed.