Power on: Press and hold the function key for about 3 seconds

Power off: press and hold the function key for about 5 seconds

TWS pairing: automatic pairing after power on

Play/Pause: Short press

Switch to the previous song: double click on the right ear

Switch to the next song: double click on the left ear

Volume Plus: Triple tap left ear

Volume down: triple tap right ear

Start SIRI: left ear/right ear long press for 2 seconds and release

Headphone answering phone function: left ear/right ear short press

Headphone hang up function: left ear/right ear short press

Headphone reject call function: left ear/right ear long press for 2 seconds, or double click

Switch between headset and mobile phone handset: During a call, press and hold the multi-function button for about 1 second to switch to the headset or mobile phone handset.

When charging: red light flashes

When charging is complete: the red light is always on