This is the Crystal Touch, a very popular product from Phiten. RAKUWA Necklace EXTREME Crystal Touch 19,800 yen (tax included) A high-performance model worn by top athletes It uses lightweight, water-resistant, transparent acrylic spheres. It has a gorgeous, luxurious feel and presence that looks great in sports scenes. Luxurious feel like natural stone It is beautiful and transparent, creating a luxurious feel like natural stone. It is lightweight and water-resistant, making it recommended for everyday use as well as sports scenes. Aluminum is used for the clasp. Lightweight and water-resistant Acrylic material It uses lightweight and water-resistant acrylic spheres. It is gentle on the skin and highly durable, able to withstand the rigors of sports. Aluminum material is used for the clasp Lightweight aluminum material is used for the clasp, achieving weight reduction. The Phiten logo is engraved in the center.