3582 3590Specifications: Productname: Leather + Aluminum Card Case Weight:70gUseful:Can be used for Traveling school meeting etcCapacity:Canput4 ~8 credit cardsProduct Description: 1. RFID BLOCKING . Bloc ki ng frequency 10MHz to 3000MHz, including 13.56 MHz in which our credit cards, debit cards and ID cards operate. Be safe and protected from electronic pickpocketing and all RFID scanners and readers. Keep the worry away our lightweight and dependable wallets provide peace of mind while traveling, shopping, and running everyday errands. 2.Avoid RFID skimming by using this every day to block your cards' RFID signals against electronic pickpocketing.