When the computer is connected, a disk is displayed with software on it(Do not put the battery in when connecting the computer, wait for the disk to respond, do not ok) This product is not suitable for bank cards! ! Cannot write electronic label stickers and electronic label cards( 213) If the device cannot be connected, please do not put the battery when connecting to the computer Working with 4 x AAA battery, standard handset, easy to carry. (not included) Comes decoding, direct preparation of various types of smart card access door. How to read and write normal RFID cards? 1. the "on/off " button. 2. Put the cards on the back of the copier. The copier be show the "" page. "ok" 3. Put the cards on the back side of the copier and "scan" 4. The copier scan and show the card number. Color:Creamy white Material: Plastic Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Accessories have random colors and appearances, No specifications accepted Specifications: 5X T5577 Keychain Package contents: 1 x Smart Card Reader Kit 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.