Handheld shape design, comfortable hand feeling . 2 buttons for simple operations.Standalone operation, no need to connect with computer / PC, easy to use.Built-in individual LED lights and buzzer indicator. Reading distance is 0 - 6cm.Can only copy 125KHz RFID card, Compatible with T5577, CET5200, EM4305 and EN4305.Parameter Read: EM / TK (EM4100 TK4100 etc) cards or keys Write: EM4305 CET5557 T5577 5200 EM4205 etc cards or Keys (Note: not support HID) Built-in: individual LED lights and buzzer indicator, ceiver antenna Power Supply: 3V (2 x AAA battery, not include) Times: Read / Write Greater than 20000 times Size: ( L*W*H ): 115 x 70 x 30mm Weight: 85gColour:As ShownMaterial:plasticPackage Contents:1 x RFID Copier5 x Keyfobs Tags5 x cardOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.