... you. You push the button on the card, the lost keys will sound alarm, working distance can reach 40 meters above ... in the purse, and very easy to find the lost keys.Card printing can be customized, colorful logo is acceptable. DescriptionPut ... box, or tin box. Card sizeKeychain size Color: red, blue, pink, grey, orange, and customzied, OEM acceptable, Logo print for free ...