Specifications: Supports 125kHz EM4100/EM410X or compatible card/tag format (HID standard is not compatible) 2 buttons for simple operations Standalone operation, no need to connect with computer Built-in individual LED lights and buzzer indicator Built-in transceiver antenna Small and portable design Can be cloned and copied over 20,000 times with different IDs Type: RFID Copier Battery: 2 x AAA Batteries (Not Included) Size: 11.5cm x 7cm x 3cm / 4.53" x 2.76" x 1.18" (Approx.) Notes: This duplicator only supports copying 125kHz RFID cards/tags Due to differences in lighting and screen settings, the item's color may vary slightly from the pictures Please allow slight dimensional differences due to manual measurement Package Includes: 1 x RFID Copier 10 x Writable Key Tags