Features: 1. This product is a 125khz RFID reader/writer with USB interface. 2. Fast in reading the RFID Tags. 3. Connects to PC to read the RFID tags and update to the application. 4. Could Read and Write and copy/duplicate ID cards and re-use. 5. Widely used in entrance guard, consumption, hotel lock, water meter, electricity meter and gas meter and a series of IC card management application system. Specifications: Chip Type: ATA5577 Storage Capacity: 363bits Operating Frequency: 125KHZ Maximum Read/write Distance: 3-5cmSize: Approx. 10.7 * 6.8cm / 4.21 * 2.68inch Package Weight: 132g Package List: 1 x RFID Reader1 x Driver CD 1 x Card 5 x Key Tags .Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.