Technology parameters Chip: id: TK4100, EM4305 IC: China production induction IC chip Operating Frequency: 125Eliz, 13.56MHz Induction distance: 2~10cm Work mode: id: Read-only IC: R/W Endurance: > 100,000 Data retentione tempore: > 10 years Working temperature: -25℃~+70℃ Material: PVC, DELICIUM, PETG, ABS, Paper Size: L85.5mm×W54mm, thickness 0.80mm or 1.80mm ( 1.80mm thick card with a portable hole )