Free switching of Wired/Wireless mode When using Bluetooth mode, it automatically connects to the last paired device. If the headset has run out or the device does not have Bluetooth, you can use the supplied 3.5mm audio cable to connect it. Comfortable, foldable and durable Adjustable headband with durable materials can adapt to the shape of the head and fit perfectly. The over-ear design with soft leather pads and padded headband ensure all-day comfort. The foldable design makes the headphones easy to take anywhere. Bluetooth 5.0 Bluetooth 5.0 up to 33 feet of connection distance and built-in microphone provide hands-free freedom for studying, doing homework, being in class or playing games, suitable for children and adults. Package list: 1 x Headset 1 x Audio cable 1 x Charging cable 1 x Manual Specifications: Item Type: Bluetooth Headset Material: ABS Color: black Bluetooth version: bluetrumv5.0 + EDR Usage time: about 7 hours with lights on, about 11 hours without lights Charging time: 2.5 hours Headphone output power: 10 Milliwatts Frequency: 20-20kHz Configuration: DSP/HSP/A2DP/AVRCP Battery capacity: 360 mAh Sensitivity: 108db±3db Bluetooth transmission distance: About 10m / 32.8ft Led lights: Seven kinds Sound Channel: Stereo