About this item Volume Protection - The children's headphones feature a three-stage safe volume control at 74/85/94dB, providing one-click protection for hearing health. The 74dB mode is suitable for young children, 85dB is designed for school-age kids, and 94dB requires parental supervision (press and hold for 2 seconds to switch); the combination key lock helps prevent accidental touch. Bluetooth 5.4 HD Sound Quality - These headphones offer both wireless Bluetooth and wired dual connections, perfect for children's use scenarios. With Bluetooth 5.4, enjoy a stable connection for online classes and cartoons (uninterrupted connection within 15 meters). The wired mode maintains the volume limit (special design). The 40mm high-fidelity speaker increases online class voice clarity by 50%. Comfortable to Wear All Day - The folding headphones are designed specifically for children, featuring comfortable earmuffs (available in 3 sizes) and a 4-speed retractable headband suitable for head cir