This is a chakra pendant developed by Mr. Toshihiko Yayama, famous for Yayama-style Qigong, as a countermeasure against electromagnetic waves. It can be used not only as a pendant but also by applying it to areas where you feel discomfort. The original box, a cloth belt for applying it to the body, and three instruction manuals are included. It was used for about 3 months and has no noticeable scratches, but please refrain from purchasing if you are concerned about minor imperfections.