Does anyone have experience with ?

I do not know anyone who uses theragun. As a quadriplegic I'm not some hard work everyday exercise person, but I think that this is very interesting device for muscle relaxation. Especially for lazy ones.

There are many names for this device - electro stimulator for abs, butterfly, often seen on tv shops and advertisements. For example I choose this one:

I remember 25 years ago in rehab center, there was device called FES (F-something electro stimulator). Physical therapeuts know. There was wires connected on specific spots on forearms and palms to stimulate particular muscles for extracting or contracting fingers.

I'm watching this butterfly on tv for years and never decided to buy it. I'm curious how it will work on quadriplegic rounded belly. Would it be smart buy or wasted money?