Adjustable ISO 14443A 7 Byte UID NTAG 213 Silicone NFC WristbandBasic Feature:NTAG213 NFC Chip : 180 bytes memory , 7 bytes UID ; 13.56 MHz frequency ,ISO 14443A protocol , Most popular NFC Chip , it can work with all NFC phone ;Specification:Material : Silicone Colour of NFC bands : Green ,white , black , red , yellow (we will adjust the colour as your Pantone value ) ;Available Chip : LF:TK4100..