a. Power on: Please press and hold the Bluetooth headset multi-function button for about 4 seconds until the blue indicator light flashes, then release the multi-function button. At this time, the Bluetooth headset has finished turning on.
b. Shutdown: Please press and hold the multifunction key for about 4 seconds until the red indicator light starts to flash quickly or release the multifunction key when you hear the sound of [哗], and then the shutdown is completed.