1. Material:ABS2. Frequency: 125 KHz3. chip: Original AT MEL T5577 (The best rewritable chip)4. Package included: 10pcs blue RFID keyfobs5. Working Mode: Read-write modes - Can be used in 125KHz RFID card Copier/ Duplicator6. Storage Capacity: 330 bit (264 free bit availability)7. Reading distance is 0 - 10cmPackage include: 10pcs T5577 RFID rewritable blue 125KHZ Keyfobs