How does it work? Well, instead of the coil and magnet system that's been used for over a century, MEMS drivers rely on a voltage-driven monolithic piezo drive that convert signals into sound. This design sees a silicon diaphragm used for the speaker, with the piezo layer distributed evenly under the diaphragm surface.
I'm no engineer, but that sounds different than normal speakers to me.
Well Bluetooth would likely add a bit more latency, so that makes sense when you think about it.
At least it has a headphone jack.