The OMRON Total Power + Heat is a powerful drug-free innovative device that relieves chronic acute* and arthritic pain through the combination of soothing heat and TENS technology. Choose alternating periods of TENS with Heat or TENS alone to reduce and relieve muscle and joint pain stiffness and numbness in the lower back arms legs shoulders and feet. The unique gel pads included with this device can heat up to 110 F for on-the-spot warmth while delivering TENS therapy to the surface of the skin for optimal pain relief. Total Power + Heat has a variety of preset body pain modes massage-like modes and intensity levels that allow you to customize your pain relief experience. Unit – One-Year Limited Warranty