Use your phone with easy-to-use app to track the item by the ring mode(set in app) from the attached key finder when the item is out of range and disconnected.Also ring and find your cell phone by simply pressing round button on the Key Finder.APP will help find with location map to speculate approximate location of your missing item. It records the last place the give you signal guiding you to lost item.And only one phone can use it at the same time. It will display the location on the map. You can also share the device to others.