Description
It is primarily an electrical muscle stimulation (EMS / myostimulation) system used in aesthetic treatments.
Its reported functions include:
Transion: Electrical stimulation designed to produce muscle contractions.
Isogei: A muscle-stimulation treatment used for toning and body contouring.
Microgei: Microcurrent treatment.
These functions are documented in equipment listings and treatment descriptions. 
What is it used for?
Muscle stimulation and contraction.
Body toning and contouring.
Aesthetic treatments targeting areas such as the abdomen, thighs and buttocks.
Facial microcurrent treatments, depending on the attachments.