The wireless headphones feature V5.3 Bluetooth technology with an integrated microphone and offer two different safe volume settings of 85 dB and 95 dB for the perfect sound level in any environment. The built-in 500 mAh battery provides a battery life of up to 24 hours and can be fully recharged within approximately 2 hours using the included USB Type-C charging cable. These Bluetooth headphones are suitable for children aged 3 and up and can be individually adjusted to fit any head size with the extendable adjuster. They are also lightweight, durable, foldable, flexibly adjustable, and comfortable to use. The Bluetooth range is up to approximately 10 meters, and an additional 3.5 mm audio cable is included in the package.