usage
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First of all, in the shutdown state, long press the power button for 3 seconds until the power is turned on, and quickly press the power button twice after the prompt light is on. You can switch from English to Chinese, and the same applies to Chinese to English
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Each Bluetooth headset startup button is different, but there is a button you can press, this button around the headset, you can look for it. All Bluetooth headsets are long press this button, and wait 1-2 seconds, there will be a green or blue light, this time is the boot state.