Memory capacity: 64bit, Read-only Security features: global unique serial number Frequency: 125KHz Speed of communication: 106kbps Wipe the number: >100,000 times Storage: 10 years Read distance: 2-15cm Working temperature: -20℃~+80℃ Packaging materials: PVC/PET/ABS,lwm yam. luaj li cas: 85.5×54mm Thickness: Thick ID card: 1.8mm Standard thin card 0.88mm Non-standard size thin card: 1.05mm or other specified