WHY ... ! Baseball players wear germanium necklaces when watching TV? Have you ever wondered? There is a reason for this, but if you write the effects and effectiveness, we have no explanation because we will not be able to take it off. What is germanium: The 32nd element (Ge). About 100 years ago Dr. Winkler in Germany succeeded separation from silver minerals, and is a semiconductor with submetallic elements found to combine metal and non-metallic properties. Germanium is a submetallic semiconductor between metal and non-metal. Semiconductor is a conductor that reacts with energy such as light and heat, and it becomes an insulator that is impermeable. In Neva, the United States and others permitted for insurance applications. This necklace is scattered with germanium so it also has a large surface area for a reaction and an image that reacts to the entire product. In addition, it is made with a blend of germanium and ceramic and is compressed molding, so it does not have a problem with the quality even after repeated washing. No metal, no need to worry about metal allergies or react with sweat. Especially recommended for sports people.