Features: To clone 125Khz RFID card. Support 125Khz EM4100HID/AWID. Copy EM4100/HID/AWID Able to reference the device module when you work. Easy to use. Support HID copy. Description: 2 buttons for Simple operations Built-in transceiver antenna. Read / Writable card & keyfobs can be cloned and copied > 20000 times with difference IDs. Specification: Working frequency: 125Khz Power: Two piece AAA batteryit can be use 20,000 times.(Batteries are not included) Distance: 25mm keyfob), 60mmcard Supported blank tagT5557,EM4305, CET5200, T557. Dimension: 110*67*30 mm ButtonRead ButtonWrite Button Package included: 1 x Handle RFID Writer 10 x Tags 1 x Instruction Note: Push power switch on the right of deviceit will keep two or three timesand LED is on mean it worksif not restart please. Repeat step 3 or step 4 if you want to make more same ID card. Thank you