Feature: Protects chip technology "smart-cards" from hackers' RFID readers in the range of 10 kHz-30 GHz. Inner layer blocks signals and prevent radiation, outer Oxford cloth only prevent radiation, can't block signals. ID card, bank card, such as IC magnetism card, putting into the bag can avoid magnetism lost and info leak. Block Cell Phone Signal - If you don't want to answer the phone, you can put the phone in the pocket of the bag and close it, then the phone will be disconnected. This bag can also block cell phone GPS signal to prevent tracking, protect your privacy. Block Car-key Signal - Ensure your car's security system from getting hacked. L size fits smart Phones like for Apple iPhone 8, for iPhone 8 Plus,for Samsung Galaxy S7/S7Edge and More. S size fits car-key, ID card or other items which are smaller than phone.
Specification: Type: Faraday Bag Material: Oxford cloth Quantity: 1pc Item Color: Black Attention Intensity: 90Db Function Efficiency: 99.9% Size: 12.5*8.5*/4.7*3.3"(L*W) Net Weight: 24 g/ 0.9oz