The Mifare DESFire 8K NXP EV3 Cards are contactless cards that come with a genuine NXP EV3 Chip and a memory capacity of 8K bytes EEPROM. These cards operate over 13.56 MHz frequency and can store multiple applications. They are highly responsive, with a data processing rate of up to 848 Kbits/s.Sold in packs of 1008K byte EEPROM memoryCompliant with all 4 levels of ISO / IEC 14443 A