This is a Qigong stick based on the 11-yen coin therapy, made by winding aluminum and copper wire into a non-inductive coil to create a zero-magnetic field. Stroking the hands, feet, and body with it creates a zero-magnetic field, putting you in a Qigong state and boosting your immunity. Applying it to pain and stiffness can adjust the energy wave and alleviate the issue. A usage video is available on YouTube. Search for "波動(ゼロ磁場)気功棒" (Wave (Zero-Magnetic Field) Qigong Stick). https://youtu.be/4lzTaeSSr3c From your address and name, dowsing will determine the locations of meridians with poor energy flow and mark them with a red circle. Gently stroke those areas of your body with the Qigong stick. Size: 11cm Instruction manual (4 pages) Video to determine authenticity: Search for "ダウジング判定　ゼロ磁場ペンダント" (Dowsing Judgment: Zero-Magnetic Field Pendant) https://www.youtube.com/watch?v=RhhsZgtpHDw Easy zero-magnetic field test at purchase: Place your left middle finger on the smartphone image of the item you want to buy. If your breathing becomes easier (deeper), it's a zero-magnetic field. Place your left middle finger on the smartphone image of the item you want to buy and receive information. If the O-ring test shows strength, it's a zero-magnetic field.