Philips S50 Mifare 1K

MiFare 1K card from Philips, also known as Mifare Classic. Operates at 13.56 MHz wireless frequency, according to the ISO 14443A standard, and contains 1Kbytes of read/write memory that can be used for multiple applications.
MiFare cards typically operate at a distance of up to 10cm depending on the power provided by the reader.