ISO CR-80 (85.6 x 54 x 0.76 mm) proximity smart card 13.56 MHz without contact chip. MIFARE™ 4 Kbyte memory (40 sectors). 7 Byte UID or 4 Byte NUID (to choose). Anti collision. Made of PVC. White, no screen printing, except for the marking of the insert slots. Minimum order: 2,000 units (in packages of 2,000 units).