● Materials: [Body] Stainless steel / Nylon / Carbon, [Clasp] Stainless steel / Carbon / Magnet / Silicone, [Technology] Metax ● Made in China ● A necklace featuring next-generation carbon material on the top. The body uses a lightweight wire material to support performance from the neck. ● Durable and heavy-duty carbon material is used. The clasp uses stainless steel and carbon, combining different materials to create a luxurious feel. Lightweight, water-resistant, and rust-resistant wire is used, providing high durability to withstand hard use in sports scenes. Magnets are used in the clasp for easy attachment and detachment. Thank you for viewing. I purchased this about 5 years ago, but I am selling it because I haven't worn it much. There are no noticeable scratches.