SpecificationsName: Far Infrared Negative Ions WristbandMaterials: Silicone, Far Infrared StripVaraints: Black, Red, BlueDimensions: About 1.3cm x 24cmWeight: 13gFar Infrared: 4-16cmNegative Ions: 1533 IONS/CMFPackage1 PC BraceletAbout Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact usDuring the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shoppingThanks for your cooperation and we'll make you feel satisfied.