Pain free - anywhere, anytime PainPod is FDA-approved wearable, fast-acting pain relief. The clinically proven TENS and CES (cranial electrical stimulation) technology blocks your body.s pain signals and stimulates blood flow, speeding the natural healing process. Place the wireless adhesive patches wherever it hurts and let the gentle microcurrents quickly relieve the pain of migraines, headaches, neck, shoulder or back aches. Hand-held remote controls 12 medically tested preset programs with 10 intensity levels. Rechargeable. *Do not use if you have a pacemaker, defibrillator or other implanted electronic device; or, if you have Deep Vein Thrombosis (DVT) Studies published in the Clinical Journal of Pain show that Transcutaneous Electrical Nerve Stimulation (TENS) is effective for pain relief.