These earbud headphones are the perfect accessory for your FONA - they've been tested to work with our modules - but can be used with any iOS or Android device that uses a TRRS pinout.  The buds themselves are 16mm in diameter with a nice 40" long.  They come with a standard 4-pole TRRS headphone jack and have a small microphone for phone calls.

We may change the model up but for now they are 'OEM' Apple-looking brand in black.