["Description:\r\nbrand new and high quality\r\nFeatures:\r\nClosed-loop wristband, elastic, easy to wear, easy to use, waterproof, damp-proof, shock-proof, and high temperature resistance\r\nEasy to carry, soft,comfortable to wear\r\nNo external power required\r\nApplication: Widely used in swimming pools, cold storage, field operations and other extremely humid environments,even in the harsh conditions such as long-term immersion in water, can be used normally.\r\n\r\nSpecifications:\r\nMaterial: Silicone\r\nColor:Green,Yellow,Blue，Black，Rose-Red(optional)\r\n(The yellow is a little smaller, but the bracelet is elastic and can be worn normally.)\r\nDiameter:65mm/0.21inch(approx.)\r\nLength:4.3cm/1.69inch(approx.)\r\nWidth:2.6cm/1.02inch(approx.) \r\nfor 125khz RFID reader to gain access\r\nWorking temperature: -50 C ~ 210 C\r\nChip: EM4100 TK4100 Read only\r\nIt applies to access control, hotel locks, staff attendance and school campus access and payment control, identification and security systems, parking lot entry and payment, \r\nsocial security management, transportation payment, municipal and ancillary service payment\r\nQuantity:1Pc\r\n\r\nNote:\r\nNo retail package.\r\nTransition: 1cm=10mm=0.39inch\r\nPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\r\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nPackage Include:\r\n1x RFID Bracelet\r\n(other accessories demo in the picture is not included.)"]