Thank you for viewing! These are reversible magnetic earrings with half-sphere pearls and crystal glass. Size of half-sphere pearls and crystal glass: 4mm The magnets used are neodymium magnets (4mm x 1.7mm thick). The magnets attach firmly without causing pain. ★ Immediate purchase is available. Many other magnetic earrings are also on sale. ★ Bundle discounts available: 50 yen off for 2 items, 100 yen off for 3 items. ★ Please be careful not to lose any parts, as they are small. ★ Strong magnets are used. Please do not give them to small children, as there is a risk of accidental ingestion. Also, prolonged use of magnets may improve blood circulation and cause discomfort in the earlobes. In that case, remove the earrings and rest your ears. ★ For those in a hurry, we can ship via express delivery for an additional 300 yen. Please let us know before purchasing. * We will only accept this if it can be shipped during the weekday mornings. ★ For those who wish to use Mercari shipping, we will accept it for an additional 100 yen. Please let us know before purchasing. Thank you very much.