I still have my old Phiten X30 necklace my wife bought for me almost two years ago. During badminton games, I can see a significant improvement in stamina when I wear my Phiten necklace. When I don't play, I still wear it whenever I feel some neck, shoulder and upper back pains and I realize that the pain numbs.

I tried not wearing it for almost a month to test if the Phiten "effect" is real or maybe it's just plain psychological. I ended up buying some Ibuprofen meds to ease the pain and I would visit the spa to really have a therapist massage my back. Now, I've been wearing it (again) for almost two weeks now and no pain at all! I even noticed that I get better sleeps whenever I wear it. Phiten really works for me.