JBL Safe Sound JBL legendary sound designed to never exceed 85dB making them safe for even the youngest music fans. Bluetooth enabled A wireless connection up to 15 meters away means no wires to worry about. Built-in mic Help your kids stay connected to the world with the built-in mic. They can chat easily with friends and family during downtime, or teachers while they’re busy learning. 30-hour battery life 30-hour battery life and quick-recharge with user-friendly USB type C. And for a super quick top-up, get 2 hours of battery life with 5 minutes charge. Easy controls Child-friendly control buttons make it easy and safe for children to operate. Comfort fit Soft padded headband and ear cushions for a feathery fit. Ultra-portable The compact and foldable design combined to make music highly portable. Make it yours - JBL Sticker Set Kids can personalize the headphones with the stickers set in the box.