Operating the remote control

Answering the call

Press button once quickly when receiving the call.

Ending the call

Press button once quickly during the call.

Rejecting a call

Press for about 1 second when receiving the call.

Switch the call between headphones and smartphone

Press for about 1 second during the call.

Using voice assistant function (Siri etc)

Press for about 1 second when not using the phone function.