1.Eco-friendly silicone material 2.water resistance 3.quartz ... Ion Sport WatchFeature1.Glowing in the dark 2.LCD watch display, easy for time reading 3.Ergonomic design ... Changeable battery, long time use watchMaterial100% high quality SGS silicone rubber material, Eco-friendly, harmless, non-toxic, non-corrosiveness. ... Asia, North America, Southeast Asia, West Europe Fashion Silicone Ion Sports Watch