Learning how to pair you Aftershokz heaphones with another device such as your mobile phone, smartwatch, tablet etc. View a great range of running earphones and headphones @ http://www.walktheland.co.uk/running-... The method is pretty much the same regardless of the model - Aeropex, Trekz Titanium, OpenMove, Air or XTrainerz. It turning the device off, then on using the Volume up button - keep the volume up button pressed until the light begins to flash rapidly. When it begins flashing, your Aftershokz device is discoverable and can be paired with a mobile phone.