The 6.3mm Sterling Silver Miami Cuban Link Chain is a lightweight, high-quality silver that is great for any occasion. It is imprinted with our frequency. It is available in sizes 7"-8".The unique part about this bracelet is this bracelet has been imprinted with the frequency of 7.83 HZ. This is the frequency that the human body should be at in our natural state. At this frequency, the cells in the body are communicating with each other and working together in unison.