Once your Dyson Zone headphones have been paired with the MyDyson app, navigate to the home screen, select the ‘Settings’ icon in the top right, then select ‘Your machine’s settings’.

From here, navigate through to the ‘Air’ section.

Filter life is shown as an overall percentage, which will count down to 0% as you use your headphones’ purification function. Within the MyDyson app, a notification will trigger around the 5% - 10% mark, directing you through to the Dyson website to purchase replacements.

The indicator is only a guide and you may need to replace the filters more regularly.