Item Type: Open Magnetic Ring_x000D_ Product Material: Copper_x000D_ Product Inner Diameter: Approx. 1.8cm/0.7in_x000D_ Product Specification: Black_x000D_ Product Use: Health Care Simple Open Ring 1Appetite Control: The magnetic open ring stimulates the ACU pressure points on the finger to suppress your appetite in a safe way. 2Large Magnetic Field: Two powerful magnets on each ring provide a 1,100 gauss magnetic field to stimulate acupuncture points. 3Healthy: This men magnetic ring helps to use the abdominal and femoral muscles more effectively, resulting in improved health. 4Relieving Fatigue: The magnetic gauss scale stimulates foot massage, which helps to reduce fatigue and muscle tension. 5Gift Choice: Magnetic copper ring will be a special gift for your family, friends, loved ones, suitable for Christmas, Valentine's Day, birthday, etc.1 x_x000D_ _x000D_ OpenMagneticRingManual measurement, please allow some errors.