Specifications: <br />- Can read the NFC tags and cover with smartphones that have NFC function <br />- Memory Capacity:  1Kbyte EEPROM Storage(716 free bytes available) <br />- Suitable for long url， annotation， information and tasks <br />- Support Chip: MIFARE Classic 1K（MF1ICS50） <br />- Frequency: 13.56MHz<br /><br />    Specifications<br />General<br />	 Material: ABS， Copper                                                  <br />                        Compatibility: Ardunio                                                	<br />Weight and Size<br />	 Product Weight: 0.004 kg                                                  <br />                        Product Size(L x W x H): 3.5 x 2.9 x 0.4 cm / 1.4 x 1.1 x 0.2 inches (not count the ring)                                                	<br />Package Contents<br />	 Package Contents: 1 x NFC Tag                                                	<br /><br /><br /><br />                                                <br />