Product parameters Frequency: 125KHz Storage: 8bits Format: 26bit/36bit/37bit/40bit, lwm yam. Read and write methods: non-contact type IC card Working temperature: -20℃~+70℃ Wipe life: 100000 times Data storage: 10 years Size: Thin cards: 85.5×54×0.84mm Standard thickness Thin card: 85.5×54×1.05mm Thickness cards: 85.5×54×1.80mm Read and write distance: 2~cwm, depending on the reader and the application environment Packaging materials: PVC/PET/PETG/ABS,lwm yam.