Specifications:Support 125Khz EM4100EM410X or compatible cardtag format(HID standard is not compatible.).2 buttons for simple operations.Standalone operation, no need to connect with computer.Builtin individual LED lights and buzzer indicator.Builtin 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 3cm4.53" x 2.76' x 1.18' (Approx.)Notes:This duplicator only can copy 125KHz RFID cardstags.Due to the light and screen setting difference, the item'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