Ntag203 chip features:

NFC Forum Type 2 Tag compliant IC

1.RF interface: ISO/IEC14443-A

2.NDEF format

3.Operating frequency : 13.56MHz

4.Operating distance: Up to 10cm(depending on antenna geometry)

5.Memory:168 bytes,divided in 42 pages(4 bytes each)

6.Fast data transfer:106kbit/s, True anticollision

7.Write endurance: 100000 cycles

8.7 byte serial number,16-bit counter

9.Data retention of 5 years