ITEM NAME:5X ISO PVC IC With SLE4442 Chip Blank Smart Card Contact IC Card Safety White M! Description: Chip: 4442 Storage capacity: 256byte Data protection: 10 years Specification: 85.5*54*0.86mm Voltage: 5V Write and erasure time: 2.5ms Distance of reading and writing: toch able Times of erasure: >10 million times package:5pcs.Chip: 4442. Specification: 85.5 54 0.86mm. Data protection: 10 years. Storage capacity: 256byte.