SHANSHUI Samsung Galaxy Note 4 Case, Detachable 2in1 RFID Blocking Leather Wallet Holster with Three Card Holders and One Cash Pocket with Slim Back Cover for Sumsung Galaxy Note 4(note4-rose red) 1.RFID is also called radio frequency identification technology which is a kind of communication technology,through radio singals to identify specific targets an to read and write data.Do you know most of ID CARD,BANK CARD and PASSPORT CARD are setin the RFID chipset?The RFID reader and NFC can read them with in 10 feets(about 3m)no need touching.This product is helping you to keep safe informations. 2. Two in One Detachable Wallet Case for Galaxy Note 4,with Three Card Slots and One Cash Pocket 3.Primly Crazy Horse PU Leather,Beautiful and Duralble Stitching Technology Makes the Case be Classic. 4.PC+TPU case protect your cellphone and fit with all Buttons Perfectly,and Good Back Magnet easy to Attach on the Iiron Staffs.Such as Refrigerator and Steel Holder.