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 make calls. [ Comfortable to Wear ] Ergonomic and adjustable design ensures a perfect fit for kids. Soft ear muffs and headwear pads provide comfort for long-term use. [ Wireless & Wired 2 in 1 ] Equipped with Bluetooth wireless mode and wired mode, this 2-in-1 kids headset is a great choice for boys and girls. (Tips: The product includes a 3.5mm audio cable.) [ Foldable & Adjustable ] Collapsible and adjustable design, suitable for children or teenagers over 3 years old. It features 5 sections of adjustment, and the ear cup diameter is 2.76 inches. Convenient for school and travel storage, these headphones wont be a burden for kids. [ Wide Compatibility ] These Bluetooth wireless headphones for kids work seamlessly w