13.56MHz N-tag215 E-co Friendly ABS NFC Keyfob for Amiibo is made of ABS material with rfid chip and antenna . It will be durable and injection ABS case then sealing rfid chip under ultrasonic machine without any space sideview so that you can use them in out-door harsh environment and waterproof. It will use N-tag215 nfc chip and user memory will 504 byte can store enough data for many applications such as door control access , amiibo data , cashless payment , e-tickets ,etc .Fully compliance with NFC forum type 2 and ISO 14443A protocol .