1High Quality Earphones: The earphones are very durable and comfortable to wear. Children can use them safely in cars, airplanes, schools and homes. They are very suitable as gifts for birth, Children's , Christmas and Children's . 2Hearing Protection: Childrens headsets have 2 switchable volume limit levels to protect hearing. Press the M button to switch the headset to normal mode (103dB volume limit) and child mode (85dB volume limit). Press the volume buttons to adjust the volume. 3Multifunction Connection: Bluetooth headset can quickly and stably connect with your Bluetooth device within 10 meters. Builtin microphone for hands free call, you can answer the call by pressing the button on the side of the headset. Wireless headset also support memory card. 43.5 mm Audio Jack: The headset also supports a standard 3.5 mm headphone jack, which is very suitable for smartphones, tablets, etc. It can be used when the built in battery is exhausted in wireless working mode, so you can still listen Music and answer the phone. 5Adjustable and Comfortable: The headband is very flexible, adjustable and stretchable, and can adapt to various head sizes. The soft earmuffs bring a comfortable listening experience. The foldable headband design not only saves space, but also facilitates carrying when traveling or exercising. Item Type: BluetoothHeadset Model: BOBO1 Material: ABS Function: Bluetooth 5.0/Line-in Playback Mode/Memory Card Playback Mode/Children Mode, etc. Bluetooth Version: 5.0 Effective Range: Approx. 10m / 32.8ft Working Frequency: 2.402-2.480GHz Battery Specification: Built in 500mAh Lithium Battery (Included) Charging Voltage: DC 4.2-5.5V Charging Time: About 2 Hours Life time: About 25 Hours Scope of Application: Suitable for children's learning, online lessons, listening to songs, entertainment, etc. 1 x Bluetooth Headset 1 x Data Line 1 x 3.5mm Audio Cable 1 x Manual