TagsForDroid 20 NFC Tags + 1 NFC Key Chain + Stickers (NTAG203) 20 NTAG203 NFC Tags + 1 FREE NFC keychain + 2 sheets of 12 vinyl stickers (to paste on your NFC tags) NFC Chip Type: NTAG203 Memory Size: 144 bytes Data Retention: 10 years Works with the new Nexus 4 phone and Nexus 10 Tablet and ALL other NFC capable devices