13.56 MHz + 125 KHz smart proximity key fob without contact chip. MIFARE™ memory 4 Kbyte (40 sectors) at 13.56 MHz and 64 bits read-only at 125 KHz (UNIQUE™ chip). 7-byte UID (MIFARE™). Anti collision at 13.56 MHz. IP67. PC encapsulation. Optionally printable on one side. Color options xxx = Black-001 / Red-002 / Blue-003 / Yellow-004 / Green-005 / Gray-006 / White-007 / Orange-008. Minimum order: 2,400 units (in packages of 2,400 units).