Physical Specifications Size:Φ25mm Material:Coated Paper/PET/Synthetic Paper /PVC (Chips and sizes can be customized) RF Specifications Chip:Mifare S70 Frequency: 13.56MHz Protocol:ISO14443A Memory: 4KB Operating Mode:Passive IC Life:Write endurance of 100,000 cycles,Data retention of 10 year Operating Distance:Up to 5CM, depending on the reader configuration Operating temperature:-40℃～+65℃ Personalization:Logo Printing,Full color pre-printing,QR Code printing, Barcode printing,Encoding, ect...