ANTI-AGING

Do phiten titanium necklaces work?

Like is it worth buying one? If it is, is there a big difference between these two?
http://www.phitenusa.com/p-8-titanium-necklace-star.aspx#
http://www.phitenusa.com/p-14-titanium-necklace-tornado.aspx#
should i get the thicker one or does it not make a difference?

i just went to the phiten store while i was in seattle a couple weeks ago so i got all this stuff explained [...]