10 Pcs/set Aluminum Anti Rfid Reader Blocking Bank Credit Card Holder Protection New Rfid Card <br>100% brand new and high quality<br>Color:white<br>Size:9.1*6.3 cm<br>Weight:0.02kg<br>Material: Aluminum<br>Package includes:10 pcs/set<br>Aluminum foil card sets are made of software electromagnetic shielding material --- "aluminum foil" made of its function to eliminate electromagnetic interference (EMI) interference, shielding electromagnetic radiation on the IC card damage. At the same time with airtight, light, anti-static, anti-RF function.<br> the main function:<br> 1, to prevent strong electrostatic interference<br> 2, to prevent strong electromagnetic field damage<br> 3, to prevent others from malicious theft, stealing your personal information<br> 4, to extend the effective use of smart cards
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