Transcutaneous Electrical Nerve Stimulation (TENS) technology ; Relieves multiple body pains ; Most powerful TENS unit to date; Highly customizable; 9 modes target specific body areas; 3 massage modes; 15 power levels; Smartphone-sized unit for great portability; Ideal for sharing with multiple family members; 100% drug free ; Includes sturdy belt clip & soft carrying pouch; 1-year limited warranty on main unit;