Selling because I have no opportunity to use it. The official price is around 7500 yen. It is currently still sold on Amazon for 6900 yen. The price is reduced because there are scratches on the box and film. Experience the "EX Airy Wire Necklace" that you'll want to feel for yourself. Many top athletes use it. ● AccuF's lightest ever: "approx. 3 grams" Experience a lightness so you won't feel it when wearing it, so light you'll forget you have it on. ● Easy attachment and detachment with magnets. The attachment part is magnetic, making it easy to put on and take off. ● Rust-resistant wire with coating. The wire is made of rust-resistant stainless steel and is coated with nylon. ◆ Function IFMC (Ifmic) has obtained a patent for its effectiveness in the following cases. (Japan Patent Office R1 July) ● Increases nitric oxide (NO) ● Dilates blood vessels ● Improves balance * When nitric oxide (NO) increases throughout the body, "improved endurance" and "faster recovery from fatigue" can be expected. [Materials] Wire: Stainless steel (nylon coating) Adjuster: Aluminum (anodized) Magnet: Neodymium [Size] Total length (circumference): 45cm