Mini-earpieces are the most common but necessary tools when people play poker games. They are coming with all kinds of poker analyzers. They are very helpful when you need to communicate with your partners during the game or listen to the card's points told by analyzers.
As traditional equipments, earphone is an essential part when you want to share information in the game. With easy wearing, you will hear the sound clearly. It's so small that people won’t notice it. Battery for this earphone can work for 6 hours. It seems like a scene in the movie, but you can easily make it true in real life.