The JBL JR 310BT are wireless on-ear headphones designed specifically for children, featuring a blue finish with pink accents. To ensure a safe listening experience, these headphones include a built-in volume limit of 85 dB, which protects young ears from loud sounds while they enjoy music or videos. They connect via Bluetooth 5.0 with a range of up to 15 meters, allowing for freedom of movement around the room. Equipped with 32 mm drivers and a frequency response of 20 Hz to 20 kHz, they deliver clear audio powered by a 400 mAh lithium polymer battery. You can expect up to 30 hours of playtime on a single charge, and when the battery runs low, a full recharge takes about 2 hours using the included USB Type-C cable. An integrated microphone allows children to take calls or participate in online lessons using the simple on-ear controls for playback and call management. Weighing only 115 g, the design focuses on comfort and portability with soft ear cups and an adjustable headband. The foldable frame makes them easy to tuck into a backpack for travel. Each set comes with a sticker set, letting kids personalize their gear to match their own style.