Zero Magnetic Field Induction Card List Price: ¥7,150 This product is by Shinichi Aida, the creator of the antioxidant solution. A zero magnetic field is a place where the S and N poles of magnetism cancel each other out, maintaining a magnetic field at a low state close to zero. Places said to be in a natural zero magnetic field state are where delicious water springs forth, and are so-called power spots, where it is said that visiting them brings healing and cures illness. It is business card size, so you can put it in your breast pocket, in your smartphone case, or under your pillow; there are various ways to use it. Size: Approx. 8 x 5.4 cm (roughly the same size as a business card) Thickness: Less than 1 mm Weight: 4g I purchased it and kept it in long-term storage unused. Therefore, there are some minor scuffs on the outer bag, but the card itself is like new. I will ship it in a new bag. Please understand. It will be carefully packaged to prevent bending and shipped via YuYu Mercari便. Thank you for looking.