Here is a helmet surround sound system that lets you keep up with your calls and listen to music on the road. BE-LINK 4 comes with a simple external Bluetooth controller and detachable microphone. It has a range of over 10 meters. The battery life lasts up to 10 hours. The device is IPX5 waterproof rated.
BE-LINK Gen. 4 is compatible with a wide variety of helmets. The control deck lets you answer / reject calls, change volume, activate Siri, and more. This product is getting funded on Kickstarter.