The card and in the combination are default empty command products. If testing reading and writing is required, use the replicator to read the complimentary label, then write it into the readable and writable card. Requires 2 AAA 1.5V batteries (not included). Small size, lightweight (56g), convenient for on-site copying. This device can copy most common parking cards, access cards, switch cards, including small button-type and shaped cards. Can be reused; proximity cards can be used an unlimited number of times. Please note that the product chips default to blank instructions. If writing is required, first read the 125 kHz device instruction, then write it to the corresponding card. Replicator features allow certain cards that can only be copied once to be reused multiple times on the host. Color: As shown Material: Plastic Package Contents: 1 x Handheld ID Copier 6 x Black T5577 Buckles 6 x T5577 Cards Only the above package content is included; other items are not included. Note: Light reflection and different display settings may cause slight color differences between the image and the actual item. Measurement error allowance is +/- 1-3 cm.