Features: Materials: magnetic material Health function: health, magnetic therapy, reduce weight Size: 19cm(Length of bracelet) Color: Black Weight: About 34g Package Includes: 1Pcs Magnetic Bracelet Note: 1, pacemaker or in patients after cardiac surgery can't contact. 2, the magnet can not contact with magnetic card, bank card, meal card, the bus card, student card, etc.), mobile phone, computer electronic items.