In early 2019 Livescribe has a supply problem with the headphones (ear-buds) that are used with the Echo smartpens (2gb and 8gb). The part number is AAA-00020 and they are not likely to be available for many months.
In the meantime, SmartpenCentral offers this alternative product.
The headset is NOT packaged but it is new with a 12-month warranty.
This headset includes a good quality microphone and the correct 3.5" connector to use with an Echo smartpen.
Please note that this product cannot be used with other Livescribe smartpens such as the Aegir and the Livescribe 3. These earbuds are only used with Livescribe Echo smartpens.