SCALA keyring classic, white, MIFARE® DESFire®, 2 k, The keyring classic is particularly robust, break-proof and waterproof., The cover part is ultrasonically welded. It is not possible to open the housing tag., In the RFID technology MIFARE® DESFire®, the keyring is available in the so-called speed variant. With this variant, the reading distance is greater than with a normal MIFARE® DESFire® keyring., The serial number is printed on the keyring., white, MIFARE® DESFire® Speed, 4 k, with serial number