Specifications:Read EM4100 or TK4100 keys and cards.Read and copy and duplicate the 125Khz EM4305 CET5557 T5577 5200 EM4205 cards and tags.Supports 125Khz EM4100/EM410X or compatible cards and tags formats (HID standard not compatible).Built-in individual LED lights and buzzer indicator.Built-in transceiver antenna.Read/writable card & key fobs can be cloned and copied more than 20000 times with difference IDs.Item Name: Handheld RFID WriterFrequency: 125KHzPower Supply: 2 x AAA Batteries (Not Included)Voltage: 3VFeatures: Mini, Portable, HandheldSize: 115cm x 70cm x 30mm/4.53" x 2.76" x 1.18" (Approx.)Notes: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:3 x ID Cardsor1 x Handheld RFID Writeror3 x ID Cards1 x Handheld RFID Writer