I have the same about a Q Link pendant (http://www.clarus.com) a friend of mine from Germany brought over with him. The bracelet supposidy ballances one's yin/yang (no studies being done on it however). The Q link bracelet suposidly protects one from electromagnetic fields and increases energy, focus and clarity (with some scientific colaboration). Good question.
Love, kindness & forgiveness with you,
Shawn