RFID smart card reader plug and play drive free Fast reaction speed of non-contact card reading less than 0.2 seconds, reading and writing distance up to 8cm, card reading interval time 0.2 seconds, support | D card reading and writing Anti sponge pad at the bottom four sides are equipped with sponge pads, and the anti wear-resistant sponge pad has removable screws inside The shell is made of PVC material, which is scratch resistant and durable. The surface is frosted, environment-friendly, and sprayed with exquisite technology Colour:black Material:PVC Package Contents: 1 x Reader 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.