key Fobs/Keychain Smart Tag: 1) Chip frequency: 125kHz -13.56kHz 2) Material: ABS, PVC 3) Shape: keychain, ... fob, token, wris key Fobs/Keychain Smart Tag:4) Chip: TK4100, EM4100, T5557, Hitag2, Mifare S50 5) Custom logo or ... ) Mode: EM4100, EM4102, TK4100 (much cheaper, compatible with EM) 4) Frequency: 125kHz 5) Transmission: Passive 6) Material: PVC, PET, ABS 7 ...