Err … I’ve got something similar I bought from jaycar about 5 years ago … for $20.
I got rid of it, since the accuracy was quite poor & unless I turned the amp up, it did bugger all, and then it’d work for practically any damn sound. I’d expect with 5 years up their sleeves & wonderful digital processing, they can now get it right.
It’s just a bunch of mini-subwoofers bashed into a hard cushion which sits either behind your back, or under your butt.
Highly over-rated … and highly over-priced