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Reminder for using headphones There are two ways to connect headphones: 1. You can turn on the power of the earphones, then turn on the Bluetooth device of the phone, find the corresponding earphone Bluetooth device, and then connect and use it, 2. Connect to the computer through an audio cable, and the headphones can be used without turning on the power. When the headphones are plugged into the computer audio interface, the earphone type will be selected. Please choose a fully enclosed earmuff type earphone (if not selected correctly, only one ear may have sound. If both headphones are selected correctly, they can work normally and can be tried multiple times) 3、Regarding the microphone interface of headphones: The microphone interface of headphones and the audio cable interface are easily plugged in incorrectly. The microphone interface is elliptical, while the audio cable interface is circular. As the microphone interface is elliptical, please proofread it before connecting!