This card is compatible with NFC capable phones and tablets, it is Smart Card Tags.
You can do many tasks use this tag, such as set an alarm, turn phone to silent etc.
If you dont know how to use it,please search YouTube to see.
There are many free applications on internet, so you can program very easy.
100% brand new and high quality
Frequency: 13.56 MHz
Size: 85mm x 54mm x 0.9mm
Material: PVC, Waterproof
IC tag is suitable for 13.56MHz ISO14443A S50 card reader and reading distance is 0 - 10cm
(Reading distance depends on readers, not the cards)
User definable access conditions & password for each memory block
1K byte EEPROM memory (768 FREE BYTES availability)
Organized in 16 sector with 4 blocks of 16 bytes each (one block consists of 16 byte)
Write endurance 100,000 cycle
ISO standards :ISO 14443 / 14443A
Perfect support for:
For Xperia P, For Xperia S, For Xperia sola,
For HTC One X,
For Prada 3,
For Panasonic Eluga,
For Samsung Galaxy Nexus, For Nexus S, S 3, Note 2, etc....
& other Android NFC supporting devices!!!

Whats Included:
100 x NFC smart card tag tags Mifare 1k S50 IC 13.56MHz Read Write RFID Arduino