JBL Safe Sound <85dB JBL Junior 470NC headphones are designed to never exceed 85dB. This way your kids can enjoy the same great sound that made JBL a legend, at a volume that is always safe for their ears. Parental Control with Customizable Volume & Playtime Use the automatic 85dB maximum volume limit, or customize a lower one. You can also customize hearing protection settings by limiting both maximum volume and daily listening time. Easy monitoring Use the JBL Headphones app for real-time reports on how long they're listening and at what volume. Check daily and weekly usage and volume reports. And set up your own PIN code to protect your settings. Active Noise Cancelling JBL Junior 470NC headphones have Active Noise Cancelling to shut out distracting external noise, so kids can enjoy their entertainment at a lower volume. Built-in mic JBL Junior 470NC headphones feature a built-in microphone to help your kids stay connected with the world. They can talk with teachers while they're learning, or chat with friends and family during their downtime.