Main technical parameters Communication protocol: ISO 14443 TypeA Induction frequency: high frequency 13.56MHz Package IC chip: NTAG213, FM11RF08, or specify Working temperature: -20°C~+80°C Dimensions: inner diameter 20mm, width 8mm, size can be specified Color: black, white, red, pink, orange, green, blue, etcetera. Peso: 3 grams Optional process: printing, fuel injection, engraving LOGO or number, fill-color Packing: 100/bag, 1000/box