Specifications:Support 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 above 20000 times with difference IDs.Type: RFID CopierBattery: 2 x AAA Batteries(Not Included)Size: 11.5cm x 7cm x 3cm/4.53" x 2.76&39;&39; x 1.18&39;&39; (Approx.)Notes:This duplicator only can copy 125KHz RFID cards/tags.Due to the light and screen setting difference, the item&39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x RFID Copier10 x Writable Key Tags