key Fobs/Keychain Smart Tag: 1) Chip frequency: 125kHz -13.56kHz 2) ... Shape: keychain, fob, token, wris key Fobs/Keychain Smart Tag:4) Chip: TK4100, EM4100, T5557, Hitag2, Mifare S50 ... ) Application: parking, car, access control8) Looks like articleEM Tag CardFeatures:1) Card type: read only 2) Memory: 64 ... Frequency: 125kHz 5) Transmission: Passive 6) Material: PVC, PET, ABS 7) Size: 86 x 54 x 0.8mm ( ...