About this item [ Bluetooth 5.3 ] Kids wireless headphones feature upgraded Bluetooth 5.3 connectivity technology for faster and more stable connections. At the same time, with 40MM large coil speaker and built-in microphone, children can easily enjoy HD sound quality and call. [ Comfortable to Wear ] Ergonomic and adjustable design ensures a perfect fit. In addition, soft ear muffs and headwear pads keep your child comfortable for long-term wear. [ Wireless & Wired 2 in 1 ] Equipped with Bluetooth wireless mode and wired mode, parents dont have to decide whether to buy wireless headphones or wired headphones. A 2-in-1 kids headset for boys and girls is a good choice. (Tips: The product is equipped with 3.5mm audio cable.) [ Foldable & Adjustable ] Collapsible and adjustable design, suitable for children or teenagers over 3 years old. Can be adjusted with 5 sections of expansion and contraction, and the ear cup diameter is 2.76 inches. Convenient for school and travel storage, kids hea