Colantotte Magnetic Necklace Colantotte Necklace Crest SMART Limited Gift Set Black X M Size ([Limited] Black, Approx. 47cm)

---------------------------------------------------------------------- Size: S (approx. 43cm) Weight: approx. 10.5g, M (approx. 47cm) Weight: approx. 11g, L (approx. 50cm) Weight: approx. 11.5g Top maximum width: 8mm (common to all sizes) Quality/Material: Neck loop part: Silicon (8 rare earth permanent magnets 160mT (1600G) arranged in alternating north and south poles) /Top joint: SUS316F Medical device certification number: 226AGBZX00054000 Delivered in a wrapping bag (not wrapped) The top joint of the CREST necklace has been made more compact and a slim loop with a diameter of 4 mm has been adopted. The top joint has a glossy finish and is ion plated in all colors to prevent scratches and maintain its beauty. The silicon loop contains 160mT (1600G) x 8 rare earth permanent magnets. The product weight has been reduced by approximately 48% compared to conventional products, and it is also more comfortable to wear.