【Built in Microphone & Hi-Fi Stereo Sound】: The kids wireless headsets with built-in mic provide clear hands-free calls and convenience for kids' on-line learning and communication; The custom tuned 40mm dynamic drivers give your kids crisp, powerful sound that helps them better involving in music, videos, games and virtual courses | 【Adjustable & Foldable】: The retractable headband flexibly fits a wide range of head sizes for boys, girls, students, kids, toddles, teenagers as well as adults, so that the headphones for kids can keep your kids company as they growing up; The foldable design makes it convenient to carry, the wireless headphones can be easily put in the suitcase or bag for travel or school | 【Pressure-free Comfort】: The soft earmuffs and headbands of the over-ear kids Bluetooth headphones are made from breathable durable material. Your kids can wear the Bluetooth headsets in the car/bus, on the airplane, at school and home comfortably for several hours without squeeze and mugginess | 【Bluetooth 5.0 & Wide Compatibility】: The latest Bluetooth version 5.0 promises quick and stable connection with PC, phones, tablets, iPads, music players, and other Bluetooth enabled devices, as long as the paired devices are within 33ft (10m) | 【15-Hour Wireless Time】: Get up to 15 hours constant playing time on a single charge with the built-in 300mAh battery; When the children Bluetooth headphones run out of battery, you can plug in the braided 3.5mm audio charging cable for endless enjoyment; Never need to worry about power shortage for a long travel