The set includes: 1) Bluetooth module (1 pc.) 2) Wireless headband (1 pc.) 3) Programmed processor (1 pc.) The kit is designed to update the 4th generation game sets. Dear customers. We strongly recommend that you do not install a Bluetooth module in the metallic parts of your game set. This can lead to an unstable connection between your headband and your weapon. The Bluetooth range can also be reduced. Our manager will help you make the best choice of weapons for your business.