This bi-directional cable can be used with 3.5-millimetre audio-out and audio-in ports, allowing you to connect your AirPods Max or Beats Solo Pro headphones to 3.5-millimetre audio sources, or to connect your iOS or iPadOS device to speakers with 3.5-millimetre audio ports.
Using with AirPods Max or Beats Solo Pro
Connect your AirPods Max or Beats Solo Pro headphones to the audio-out port on an aeroplane, iPhone, iPad, Mac or other device.
Using with iPhone or iPad
Connect your iOS or iPadOS device to the audio-in port on your car stereo or other speaker.