Core One - A80

How to activate your Core One for the first time ›

How to choose the right ear tip size and type for your Core One ›

How to insert and remove your Core One ›

How to charge your Core One ›

How to turn your Core One on and off ›

How to replace the ear tips on your Core One ›

How to wear your Core One correctly ›

How to adjust the volume on your Core One ›

How to switch hearing programs on your Core One ›

How to clean your Core One ›