Bluetooth-compatible 5.3: Simple pairing, stable connection. Let your child enjoy wireless music without worrying about cable winding Using the attached audio cable to connect the headphones to your device, you can still enjoy the music, even if the headphones are not electric, after inserting the audio cable, the Bluetooth-compatible mode will be switched off Wireless hands-free call: When the headset is on, keeping your child on your phone is also an ideal online learning tool Rechargeable-Built-in 400mAh: about 3 hours of charging can support about 8-20 hours of continuous playback. If the Bluetooth-compatible mode power is low, you can use the auxiliary cable to enjoy the wired mode Independent button: multi-button design, can easily switch music, adjust the volume, free control of play/pause Adjustable hair bands: soft pads and decompression ear pads, suitable for people of different ages Light and comfortable: even if the child wears it for a long time, he will not feel the pressure Foldable portable design: Foldable headband, compact design is perfect for your backpack Specifications: Bluetooth-compatible version: V5.3 Bluetooth-compatible distance: 15m (no interference) Interface: Type-C Time of using the light: about 8 hours Use the time to turn off the lights: about 20 hours Horn size: 40 mm in diameter Impedance: 32 Ω Battery capacity: 400mAh Package included:1 x Headphones1 x Audio Cable1 x Charging Cable1 x English and Chinese ManualOther items not included