User instructions:
1. Power On / Off
Power On: Long press the button for 2 seconds to start up, the LED
lights will turn on red and blue and enter in pairing mode. Take out
the earphones from the charging case and it will start automatically.
Power Off: Long press the button for 5 seconds to shut down, the LED
lights will turn off. It will turn off automatically when you put it back in
the charging case