Pain therapy: The EM 59 Heat relieves pain by means of Transcutaneous electrical nerve stimulation (TENS); it works directly on the painful area without any medication or side effects. Electric Muscle Stimulation: The electrical stimulation device also has an EMS (Electrical muscle stimulation) function, which can be used to tighten your muscles or regenerate of individual muscle groups. Massage: You can also use the EM 59 for massage and muscle tension. A total of 64 pre-programmed applications are available in the areas of EMS/TENS/massage. Self-programming (EMS and TENS): Frequency, pulse width, On/Off time programmable. Heat pad: The heat function of the electrodes also relaxes your body and can be used individually or in parallel with a TENS program. Safe use: The medical product provides you a “Doctor's Function” with customisable programs for ideal coordination on your personal therapy program.