Sound quality knows no age, but you want to be sure your kids are safe while they're enjoying themselves. With a maximum volume of less than 85 dB, they are free to enjoy sound in JBL-quality, and that is completely safe. Noise and distractions with noise-cancelling active. Your kids can stay focused, whether they listen to music, enjoy their favorite show or learn online. With the integrated microphone your little ones do not lose contact with the outside world. During breaks, they can chat with friends and family or talk to teachers during distance learning. With up to 20 hours playback time (and 30 hours without ANC), JBL Jr460NC provides for long-lasting fun. Charging takes only two hours, so the headphones are ready to go again in no time at all. Thanks to the super simple operation your children have full control. They are designed for children's ears and heads and are made of child-friendly, safe materials that are not easily damaged or broken.