The top-of-the-line Coreforce model, "Neck Pro." The luster of ceramic and the brilliance of terra ore blend together to adorn your neckline elegantly. This is a high-durability black ceramic necklace model. The new price is 167,200 yen. Price negotiations are welcome. Comes with a warranty and case. The length is 44cm. I received it as a gift, but I already have one, so I'm selling it. Also known as "artificial diamond," the black ceramic (zirconia ceramic) used boasts superior aesthetics and durability among ceramics. In particular, it is known to be extremely resistant to scratches, with a hardness far exceeding that of general stainless steel. It is lightweight, about one-third the weight of metal, and is also metal allergy-free because it is non-metallic. It also feels less hot or cold and blends with body temperature. It is not affected by discoloration from ultraviolet rays or magnetism. Thank you for looking.