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The card holder with flash function, do not need any batteries. When it is close to the IC card reader, the card holder LED shining..
The card reader in the bus, or in the subway entrance, or in the parking entrance, and the school card reader, etc. Can make LED light of the card holder.
But some reader, because its operating frequency is too low, will not make LED light. As part of the office of access card reader. At the same time, some card reader work by infrared scanning make LED light ablaze.
Material: PU leather.
Color: 4 color printing
Size: 11Cm x 7.6Cm, a thickness of about 0.5 Cm,
Hanging belt length: 25Cm.
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