🎧 [Friendly, Comfortable & durable materials]LORELEI B-E5 child Headphones are made of environmentally friendly materials, with a headband made of metal steel bow wrapped with soft leather and pull-resistant metal parts design, whether the earphones are twisted, folded, or stretched, they are not easy to be damaged. The foldable and careful design makes it easier to carry to school. 🎧 [40H Playtime,Just Charge It Once ] With 40 hours of battery life, LORELEI Wireless headphones are enough to give you an all-day music/learning experience, allowing your child to stay out of the noise And Focus on their own world on a single charge. 🎧 [ Bluetooth 5.4+Biult-in Mic ] With LORELEI Kids BT 5.4 headphones technology ,it is easy connect to the deviceand establish a stable and reliable connection. The B-E5 headset's built-in microphone has been tested to deliver clearer calls and communicate with eLearning courses without hindrance. 🎧[Unique lightweight ergonomic design]: Professional-grade protein ear cushions make the ear cups extremely lightweight, allowing you to use them for a long time and maximum comfort. Ergonomic headphone construction, multi-level adjustable headband, can get the best size for you. 🎧[Stereo Sound & Safe Volume]:The built-in 40mm speaker, with wireless deployment, provides rich bass and real surround audio, keeping the volume at 80%, you can better experience the effect of music. High-response diaphragm, lightweight voice coil. Delivers unparalleled sound without interruption. High-quality sound just needs to be heard. Let it find the rhythm of your soul B-E5 headphone