The three ANC modes are Isolation mode, Transparency mode and Conversation mode.
Isolation mode provides the highest level of active noise cancelation to deliver a rich, immersive audio experience. For example, when you might need to concentrate on the task at hand. Transparency mode enables greater awareness of your surroundings, by boosting audio frequencies so you can hear more while wearing the product. When the Attachable travel visor is being used, Conversation mode can be activated by dipping the visor – turning purification off to conserve battery power and amplify the conversation.