The dual Chip card means there are two different chips in one card, and it is used for the different purpose of each chip. The most dual chip combo includes contact less card, the TK4100+NTAG213.

Chip: NXP -NTG213 +125KHz TK4100 

Protocol: ISO14443A

Working frequency: 13.56 MHZ , 125KHz

Memory: 133Bytes

Usable Memory: 133 bytes

Size: 85.5 *54*0.9MM

Color:  white

Reading and writing distance: 1 to 2 cm

Material:  inkjet PVC

Compatible to any kinds of ink .

Waterproof and glossy.

NFC IC reader/writer NFC Enable Phone