Fangrui Product Details 1.proxmark3 V2 Elechouse Is Upgraded From Elechouse Proxmark3 V1. You Could Know More From The V1 Page. The Ic Card Writer Has Quick-swappable/detachable Antennae. And Has 512k Flash Eeprom, So You Can Flash The Latest / Firmware, Which Is Too Big For A 256k Proxmark3, But Allows For Advanced Functions, Especially Cracking. 2.this Programmable Proxmark3 Kit Features 2 Usb Ports Allow Portable Power Source For Portable Sniffing/spoofing/reading. 512kb At91sam7s512 Controller Means You Can Install Latest And Greatest Firmware 3.this Proxmark 3 Rfid Programmer Read, Write, Clone, Copy, Spoof Rfid Tags Of 13.5mhz And 125khz, Including Hid, Indala, T55xx, Ic Classic / 1k, And More. Typical Rfid Cards And Fobs For Apartments, Work, Garages, Gates, And Other Doors Use These Technologies, So You Can Make Copies. 4.this Prox Reader Requires Some Knowledge To Flash Firmware And Operate. You Need A Laptop/desktop Computer With A Usb Port And Be Comfortable Running Terminal / Line Commands To Use The Proxmark 3 V2.