This product has been carefully designed with material selection and shape to address concerns about electromagnetic waves in daily life. It is designed with a focus on comfort and harmony in everyday life, with a unique structure and design. The material is zinc alloy. Approximately 5cm in diameter, 48cm in total length (including the cord). The length of the cord can be freely adjusted, and while lightweight, it has a strong metallic presence. In addition to its design as an accessory, it is also a popular item for those interested in the "waves" of electronic devices and living spaces. Electromagnetic Wave Protection Necklace, Zinc Alloy Pendant, Adjustable