HealthmateForever devices combine modern digital programming technology (TENS & EMS technology, bioelectricity technology and human body simulation technology) with ancient Chinese therapeutic methods. Unlike the electrotherapy devices used by many doctors, physical therapists, and other healthcare professionals HealthmateForever personal electrotherapy devices are compact, portable, and easy to use. You can fit your HealthmateForever in a purse or a pocket which allows you to go anywhere, at any time and treat your pain and recondition your muscles.