DESCRIPTION:

Brand new and high quality. 
Support EM4001. 4100. or its compatible RFID. ID card. 
Frequency: 125Khz. 
Support Windows95/98/2000/XP. 
Power: DC 5V?%) 
Reading distance: 5-8cm 
Interface: USB. 
Size:10.5cm x 7cm x 1.5cm-4.13inch x 2.76inch x 0.59inch.