What the 3S Plus Boom is to jet helmets and open-face motorcycle helmets, this 3S Plus Universal is to full-face helmets: a top-of-the-line intercom with all the functionality you need to communicate with your passenger or a colleague, in a sleekly designed, minimalist package.
With that in mind, SENA created the 3S PLUS-WB, which allows for two-way communication up to 400 meters. With that other motorcyclist, because if your passenger is at that distance, something's wrong.
The headset - because that's what the 3S Plus Universal is - can easily be fitted into a full-face helmet. The microphone is located in the chin piece and is detached from the two remaining control buttons, which you attach to the outer shell of the helmet.
Furthermore, the 3S Plus Universal is completely SENA, which means that there is 'Advanced Noise Control' built-in, that updates happen via the same USB cable and that everything is Bluetooth 4.1 compatible: music, GPS, possibly via the app, voice-controlled (in eleven languages) ...
If you're looking for something similar, but not quite this, then the SENA 3S Plus Boom (3SPLUS-B) might appeal to you. With its integrated microphone controls, it is perfect for easy installation in jet helmets and open-face motorcycle helmets.
General note: The world of electronics (which also includes intercoms, smartphones, GPSs, etc.) is changing so fast that it is possible that some (outdated) devices are not compatible with each other in certain areas. Unfortunately, the manufacturer can't provide us with data that shows which combinations between intercoms/GPSs and/or smartphones cause problems. A regular update of all electronic devices is therefore desirable to avoid problems as much as possible.