Package included: 12pcs mix colors T5577 rewritable tags Features: Chip : T5577  100percent brand new and ,The T5577 chip is more stable and has a long lifespan. It's rewritable, You can reuse it, save up your cost ! Each token can be writable and rewrite  Each comes with Key ring included Compatible with  e5550, e5551, e5554 Chip cards Support for 1326 format HID / EM4100/TK4100 Copied/Duplicated/Cloned T5567/T5557/T5577 Chip card is a frequency of 125KHz low frequency card. compatible e5550, e5551, e5554, chip Cards. Application areas (selection): Access control Time tracking Amusement parks Ticketing Clubs Canteen