Necklace Crest SMART Premium [Colantotte] (Large size, approx. 51cm, Black)

Colantotte Co., Ltd. [Medical device certification number] 226AGBZX00054000 [Effects] Magnetic force improves blood circulation and relieves stiffness. Simple and versatile, these fashion and body care products are perfect for any occasion. The popular limited-edition black x black color option has been added to the color range, making them even easier to use daily. The new product features a compact top joint on the necklace crest, using a slim φ4mm loop! The product weight has been reduced by approximately 48%, resulting in a lighter and more comfortable feel. It uses 8 magnets with a magnetic force of 160mT. The increased magnetic strength compared to conventional silicone necklaces is expected to provide greater effectiveness. The joint is located at the front, making it very easy to put on and take off. Made with Colantotte's signature corrosion-resistant stainless steel, it is less prone to rusting.