... ODM 4.polish&brush health high quality IONS bandsTestingDidn't bring Bring In the barcelet, it is ... hold bracelet, so the negativ ion is in the silicon part.,it's good for health ... , because this frequency technology energy so expensive in the whole bracelet, So the bracelet company ... push you, you easy to falldown, but if you take this energy bracelet ,somebody can't push you easily . health high quality ...