MIFARE Ultralight Cards are authentic and high-quality, equipped with a genuine NXP EV1 chip that boasts a fast communication speed of 106 kbit/s. These cards are ISO/IEC 14443 Type A 1-3 compliant and contain 48 bytes / 384 bits. Plus, they offer data privacy and security with a 4-byte NUID. When you buy from us, you can trust that we are a MIFARE registered partner. Genuine NXP EV1 chipFast communication speed of 106 kbit/s4-byte NUID for data privacy and security