JBL Safe Sound <85dB: JBL Junior 320BT 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 kids are listening and at what volume. Check daily and weekly usage and volume reports. And set up your own PIN code to protect your settings. Built-in mic: JBL Junior 320BT 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. 50-hour battery life: JBL Junior 320BT headphones offer a long 50-hour battery life and recharge quickly with user-friendly USB-C cables. For a super-quick boost, five minutes of charge will give you another three hours of battery life. Fit for kids: JBL Junior 320BT headphones come in three fun colorways and feature a 12mm thick soft pad on the headband for long-wearing comfort, less sound leakage and better sound. The headband can be adjusted to the kids' head to improve the sound experience and follow the kids' growth. JBL Junior 320BT headphones fold flat, making them easy for kids to stow in a bag or backpack. Easy controls: Durable, child-friendly control buttons make JBL Junior 320BT headphones easy and safe for kids to operate. Reuse your pack: The plastic-free packaging folds into a fun device stand, and a playful JBL sticker set is included so kids can personalize their headphones.