Fudan08 NFC key fobs

Operating frequency : 13.56MHz
Write endurance: 100000 cycles
RF interface: ISO/IEC14443-A
Data retention: 10 years
Shape and size: could be other sizes, or customized
Operating distance: Up to 10cm(depending on antenna geometry)
Chips: NTAG203, NTAG216, Topaz512, Utralight, Mifare S50, Fudan08 etc.