Our Mifare DESFire 4K NXP EV2 cards come with a 2570OE Hi-Co Magnetic Stripe for added convenience. These cards are powered by a genuine NXP EV2 chip with a 4K byte of read/write memory. With an impressive data transfer rate of up to 848 Kbit/s, these cards ensure speedy and dependable processing. Additionally, the high coercivity magnetic stripe adds an extra layer of security.Product Highlights:Comes in packs of 100Operates at 13.56 MHZ frequency rangeISO/IEC 14443 A compliant