1. Master and supplementary card can work in pair, one to one or one to many and they will send alarm among each other (max one to eight)

2. Master card will be used by main user; supple meaty card will be used on the protected object (children, pets, important l age)

3. Anti lost effective rang can be customized, to protect the object with in the covered area, can be adjusted from 1-50 meters

4. When the protected object is out of the protecting rang, MasterCard and supple monetary card will alarm loudly to remind the owner that the protected object is possible to be lost or stolen

5. Double alarm protection. Master and supplementary car will send alarm at the same time. It can alert the owner as well as the protected object or give warning to the thief that one is being tracked

6. Super thin design (Thickness 6mm), fancy design with large area for advertisement, suitable for wallet brief case or fix on pets or expensive goods

7. Easy to operate, fancy but practical, easy to carry

8. Stable functionality, reasonable price, long battery (battery can be exchanged). Surface printing can be changed according to customers' requirements

9. The card is the best gift and can be used widely in bank, telecom, insurance, stock exchange, education and home usage

10. Power Supply: 3V (CR2032)

11. Product specification: 8cm*5cm*6mm