This card works the same as the normal IC cards for Mifare 1K S50 standard. Only the Sector 0 Block Zero which is known as the Serial Number/Manufacturers Block (Chip UID) could be programmed to any UID you want

1) Chip: FUDAN fully compatible with MF1S50

2) Operating Frequency: 13.56MHz

3) Storage Capacity: 1Kbit 16 districts each district two passwords

4) Read Distance: 8-10cm

5) Card Life: More than 100 000 times

6) Data Retention Time: 10 years

7) Typical Applications: patrol attendance access control systems business card bus card highway

8) Material: PVC

9) Size: 85.5mm x 54mm x 0.82mm