Description Mifare rfid card (10 pcs) Resonance frequency: 13.56 MHz Memory: 1K Byte EEPROM Identification distance: 0 to 1.97" View more Dimensions 0.21 x 0.33 x 0" (5.4 x 8.5 x 0.1 cm) Specifications Resonance frequency: 13.56 MHz Memory: 1K Byte EEPROM Type: ISO14443 Type - A - MIFARE Operating temperature: 14 to 167 °F Identification distance: 0 to 1.97" Service time: 100.000 re-writes