Integrating Bluetooth into a smart helmet is one of the most deceptively complex challenges in this industry. A helmet's primary job is to absorb impact, which means it is filled with dense EPS foam—a material that is terrible for radio signal propagation. I’ve seen early attempts from other factories where they simply embedded an antenna deep in the foam, resulting in a frustratingly weak and choppy connection. At SPIRIT, we have spent years mastering this invisible challenge. Our engineers use advanced modeling to determine the optimal placement for the Bluetooth antenna, often just beneath the outer shell, to ensure a clear and robust signal for music streaming and phone calls. We carefully route the wiring for the speakers and microphone to avoid interference. This obsessive attention to radio frequency (RF) performance is a hallmark of our expertise. It ensures the connected features of our smart helmet work flawlessly, providing a premium user experience for our partners' customers.