NU HealthPlay Ti-Ge series use NANO- technology to put Titanium,Germanium, Tourmaline and ceramic power into whole products. It’s agreat product for any age to wear anytime and anywhere.The negative ions from NU Ti-Ge series help facilitate blood circulation,which in turn raises body temperature and enhances your metabolism.Neutralize acids caused by stress and environmental pollution. UsingNU Ti-Ge series all day to soothe fatigue and stress caused by work orexercise. Help to maintains natural body balance and sleep quality.