health silicone necklace chain is silicone,pendant is stainless steel or ... FeatureTimepieces, Jewelry, Eyewear>>Jewelry>>Costume & Fashion Jewelry>>NecklacesName;Healthy necklace,therapeutic necklace,magnetic necklace.1. Material:titanium, pure titanium material, Non-rust, ... radiation-proof, acid and alkali resistant, anti-corrosion.The necklace has Titanium,it can anti-radiation,protect body,it has ...