Lenovo's new Bluetooth blaster is simultaneously revealing and mysterious

Lenovo is apparently working on a Bluetooth blaster that it’ll likely use for VR / AR gaming. The device passed through the FCC this week, and its application gives us a lot of detail on what we can expect, including a full diagram and photos, but it also keeps us in the dark. We have questions, like why is Lenovo making a Bluetooth blaster, and what are we supposed to do with this thing?
But first, let's check out a very illuminating "function button" diagram.Lenovo (FCC)As you can see, t