Wireless BT Anti Lost Tracker Alarm Key Finder GPS Locator Kids Anti-lost, Pets Anti-lost, Luggage Anti-lost, Voice Recording, Parking Site Searching, Self-Protrait Working distance: About 25m (outdoor environment) It can locate Where you last left them to the nearest Street and then give you signal strength Guiding you to your lost item.Anti-lost alarm, remote control function,protect your valuables, kids, pets from theft or loss.