product name: EM4305/UID leather key ring card
chip: EM4305/UID
storage capacity: 8kbit
operating frequency :125KHZ/13.56mhz
communication speed: 106kboud
read and write distance: 2.5 ~ 10cm
reading and writing time: 1 ~ 2ms
working temperature: - 20 ℃ ~ 85 ℃
wipe life: >100,000 times
data preservation: >10 years