Bought the Zen Duo Loop. Having owned Trion Z bracelets in the past (failed to replace my old when I broke it) and knowing they worked, I was amazed at how quickly the inflammation in my injured knee started to go down (within 12hrs of wearing the bracelet) and has continued to do so and mobility is improving.
If you're considering buying a Trion Z, Stop thinking and BUY IT!!
I won't use anything other than TRION Z