Features:*Portable 125KHz RFID ID Card writer/copier with 10pcs writable cards.*Handheld shape design, comfortable hand feeling.*Can copy 125KHz RFID ID cards with EM4305.*Built-in buzzer and LED.*Reading distance is 0 - 6cm.About Use:1. Switch on, power led flashes one second.2. Put RFID ID Card in read area.3. Press read button, read led flashes with beep sounds.4. Put RFID card(EM4305) to be wrote in read area.5. Press write button, write led flashes with beep sounds.6. Copy done.