The following is quoted from CMC Research Institute: We have created a high-capacity pendant to withstand harsher electromagnetic environments. It is made of titanium, so it is very light (about half the weight of the F type). Retail Price: 59,400 yen CMC Filling: Approximately 1200mg (1.2g) I have used it for about two months. It is in good condition. I am selling it because I have purchased a new product.