Product Name:nfc pet microchip Frequency:125khz 134.2Khz 13.56Mhz Chip:TK4100 EM4305,Ntag216 & Icode II etc Protocol:ISO11784 785,FDX-B,HDX &ISO18092 Size:,1.4*8mm & 1.25*7mm Read range:3-21cm(depend on your device) Injector:One-time Used Data Encoding:15 digitis Memory:512 Bits 888 Bits Material:bio-grade glass encapsulation