Material: Silicon, Plastic, Nalon, PVC Craft: Silk-Screen Printing, Embossed/Debossed 125Khz Low Frequency Chips: EM4100/H4100/TK4100/SMC4001 EM4102/H4102, EM4200 Read/Write Atmel T5557/T5567/ATA5567 Hitag1, Hitag2, Hitags 13.56Mhz High Frequency Chips: ISO14443A Mifare 1K S50/MF1 S50, Mifare 4K S70/MF1 S70 Mifare Plus S 2K, Mifare Plus S 4K, Mifare S20 Mifare Ultralight, Mifare Ultralight C ...