Using the headphones controls

To power on: long press (press and hold) the Power button. You will also hear the power-up notification ‘power on’.

To power off: long press (press and hold) the Power button. You will also hear power-down notification that the headphones are off.

The headphones and right earbud buttons have multi-function control, dependent upon how long and how many times the button is pressed will determine what function you will get.