The HeatTens reduces and alleviates pain. The combination of heat and TENS technology (transcutaneous electrical nerve stimulation) leads to relaxation in muscles and joints. There are three massage modes to choose from: a sequence of heat and TENS, heat and TENS in shorter intervals, or just TENS. You can select from six preset body pain modes (arms, back, legs, feet, joints, shoulders) as well as three modes (tapping, kneading, rubbing). With 20 intensity levels, you can find your optimal personal application strength. A battery change is not necessary, as the device is equipped with a high-quality, built-in rechargeable battery. The HeatTens can help you return to a pain-free and active life.