Feature:1. GOOD PERFORMANCE: NFC RFID sticker tag is with 504 bytes memory design, with read and write lock function. Good performance. This set contains 50pcs tags and enough for daily working use.2. SECURITY AND AUTHENTICATION: NFC RFID sticker tag label typically used for contact information, such as providing your contact information or business information, and for security and authentication purposes.3. STRONG WATERPROOF FUNCTION: RFID sticker tag adopts strong waterproof function, not easy to wear, anti corrosion, high durability.4. HUNG ON KEYCHAIN AVAILABLE: NFC RFID sticker label is small and delicate appearance, can be hung on the key chain, easy to carry.5. WIDE APPLICATION: NFC sticker label is suitable for access control, hotel doors lock, staff attendance and campus access control and payment control and so on.Specification:Item Type: UID Sticker LabelMaterial: Copper AlloyOperating Frequency: 13.56MHZDetection Distance: 0-10 Cm (Depending On Reader)Working Temperature: -20 - 55, 90% HumidityRewriting Times: More Than 100000 TimesData Storage: More Than 10 YearsReading Time: 100000 TimesDiameter: Approx. 25mm / 1in.Package List:50 x NFC RFID Sticker Tag LabelNote:This NFC sticker is not suitable for iphone.