Dual Power Options: Includes an AC wall adapter and a 12V car cigarette lighter adapter.Thermotherapy: Built-in heating function to soothe tight muscles.Ergonomic Design: Contoured pillow shape fits the neck, lower back, or legs.Magnetic Therapy: Built-in magnets intended to help improve local blood circulation.Common UsesNeck & Shoulder Relief: Alleviates tension from sitting at a computer.Lower Back Support: Uses the heating nodes to relieve lumbar stiffness.Travel Comfort: Plugs into car outlets for long road trips.