Earpiece

The ear piece is a piece of equipment featured in Grand theft auto 5. It is a Bluetooth earpiece connected to the persons phone. In single player it is used by protaganists to comminuicate in Heists.

Online
The ear piece was brought in with the Hesits update it is a cosmetic item with no real use, and is unlocked for purchase after completing the Flecca Bank Heist. There are 3 different looking ear pieces that are in the gear section of Ammu Nation.