The set includes: 1) Motherboard with soldered components and an installed Bluetooth module (1 pcs.) 2) Processor (2 pcs.) 3) Wireless headband (1 pc.). 4) Lithium accumulator / Lead-acid accumulator (1 pc.) 5) 2.1mm socket (1 pc.) 6) IR module (1 pc.) 7) Microswitches (2 pcs.) 8) Power button (1-pc.) 9) Loudspeaker (1 pc.) When ordering, specify the type of accumulator. 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.