Manufactured exclusively in the United States, the Rezzimax® Tuner PRO II is an FDA registered class 1 medical device. It is a portable hand-held device that combines resonance with progressive stress-management techniques to relieve chronic pain without the need for expensive and addictive medications. Originally designed for dental professionals, the Tuner PRO has a wide range of applications and benefits for sufferers of migraines, headaches, jaw pain, neck pain, sinus pain, TMJ/TMD, anxiety, and many other symptoms. When used correctly, the Tuner PRO targets problem areas, calming the nervous system the same way one would lull an infant to sleep.