[Working frequency] Only supports IC 13.56 MHz [LED Warning Light / Buzzer] The LED reminder light is red in standby mode, the green light is in card reading status, and a built-in buzzer is provided for convenient and effective reminders. [Lightweight and easy to use] High quality flame retardant material shell, small size and thin, high-quality microchip control inside, fast card reading effect. [Efficient high-speed USB] 1.2 meters length USB transmission line connected to the device, respond immediately, no need to install a driver, quickly read the card number. [Obtain the software] When you connect this product to a computer, you can find the software on the computer. Support Working Mode: RFID Card Reading/ Writing/ Duplicating/ Decoding/ Encrypted Card Cracking Support Card Type: Only supports IC 13.56 MHz Working Method: Connect to the Computer via USB Cable Size: 108 x 68 x 12 mm (L/W/H) color:Black+blue+white Material:plastic Package Contents: 2 x RFID Copier 20 x 13.56MHz UID keyfobs 20 x 13.56 MHz T5577 cards 2 x USB Cable Only 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.