... Titanium necklace 1.Material: Titanium, germanium, magnetic&anion medical silicone 2.Any colors &sizes Silicone rubber Titanium necklaceMaterial: Made of Titanium ... material lifePrinciple of products: including titanium, germanium, magnetic and negative ion ... Necklace are flexible, convenient, beautiful, fashion and health. Different length, different colors fit to different clothes.3>Including titanium ...