The Mifare DESFire 8K NXP EV1 Cards are contactless cards that come with a genuine NXP EV1 Chip and a memory capacity of 8K bytes. They operate over a frequency of 13.56 MHz and are capable of holding multiple applications. These contactless cards are highly responsive and have a data processing rate of up to 848 Kbits/s. They are compliant with all 4 levels of ISO/IEC 14443 A.Comes in packs of 1008K byte EEPROM memoryCompliant with all 4 levels of ISO/IEC 14443 A