Chip: NXP Ntag203, Ntag213, Ntag215 Protocol: ISO 14443A Frequency: 13.56MHz User storage: 144Byte, 504Byte, 888byte R/W distance: 2-10Cm (according to the antenna design) Data transmission speed: 106kbit/s Erasable: 100,000 times Service life: 5 years Card material: PVC/PET/PETG/ABS/Paper Size: 85.5×54×0,84 mm,can be designed according to customer requirements Recommended storage conditions: temperature -25℃~+50℃ Humidity: 20%~90% RH Working temperature: -40℃~+65℃