Kakawanda:100-150KHz Work mode: R/W Memory: 330bits, 10 partitions, 8bit passwords Reading distance: 3-10cm Endurance: >100,000 times Data retention: 10 years Working temperature: -20℃~+55℃ Dimensions: 85.6×54×0.86mm Packaging materials: PVC / ABS / PET / PETG / Pepa,nezvimwewo.