corlor:grey
material:titanuim,germanium,lava
functions:improve body constitution

functions:
1.recuperate physical fitness after sports,alleviate sports fatigue and prevent sports injury

2.promote blood circulation and metabolism ,enforce immunity,and improve body constitution

3.alleviate fatigue,muscle pain,neuralgia,and migraine

4.facilitate sleep,stabilize nervous system,promote cell regeneration and prevent ageing

5.improve concentration and boost work efficiency

6.isolate electromagnetic radiation,such as cell phone,computer,television and other electronic devices