1. Prevent the Credit card, IC card, Aptitude card from loss after using. 2. When the card is taken out, the item can sound intermittently or vibration, without sound to remind the owner. The item will not stop until the card is put is position 3. Vibration remind design product with intermittent vibration without interruption to third party 4. Smart MCU controlled design, the remind frequency increase steadily to have the zero interruption for the user 5. Card design, easy to carry in the purseor bag. It can store 5 credit cards at same thime. 6. Colorful printing as required on the suface of the product. 7. You can insert five cards 8. Battery: 3V, CR2032(included) 9. C200: Vibration remind design product with intermittent vibration without interrution to the third party